Test only one Windows job

Signed-off-by: Dan Bailey <danbailey@ilm.com>

.github/ISSUE_TEMPLATE/blank--issue.md

@@ -1 +0,0 @@
-

.github/workflows/ax.yml

@@ -55,7 +55,7 @@ jobs:
       github.event_name != 'workflow_dispatch' ||
       github.event.inputs.type == 'all' ||
       github.event.inputs.type == 'linux'
-    runs-on: ${{ (github.repository_owner == 'NVIDIA-Omniverse' && 'linux-amd64-cpu32') || (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-22.04-8c-32g-300h') || 'ubuntu-latest' }}
+    runs-on: ${{ (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-22.04-8c-32g-300h') || 'ubuntu-latest' }}
     name: >
       linux-ax:${{ matrix.config.image }}-cxx:${{ matrix.config.cxx }}-${{ matrix.config.build }}
     container:
@@ -67,17 +67,22 @@ jobs:
       matrix:
         # Only test unified builds (core+ax). weekly CI should test standalone
         config:
-          - { image: '2023-clang15', cxx: 'clang++', build: 'Release', cmake: '' }
-          - { image: '2023-clang15', cxx: 'g++',     build: 'Release', cmake: '' }
-          - { image: '2023-clang15', cxx: 'clang++', build: 'Debug',   cmake: '' }
+          - { image: '2026',           cxx: 'clang++', build: 'Release', cmake: '' }
+          - { image: '2026',           cxx: 'g++',     build: 'Release', cmake: '' }
+          - { image: '2026',           cxx: 'clang++', build: 'Debug',   cmake: '' }
+          - { image: '2025-clang19.1', cxx: 'clang++', build: 'Release', cmake: '' }
+          - { image: '2024-clang16.2', cxx: 'clang++', build: 'Release', cmake: '' }
+          # Needed to test LLVM 15.X
+          - { image: '2023-clang15',   cxx: 'clang++', build: 'Release', cmake: '-DDISABLE_DEPENDENCY_VERSION_CHECKS=ON' }
       fail-fast: false
     steps:
       - uses: actions/checkout@v3
       - name: nanobind
-        #if: contains(matrix.config.image, '2023') == false
-        run: ./ci/install_nanobind.sh 2.0.0
-      - name: install_gtest
-        run: ./ci/install_gtest.sh 1.15.2
+        run: ./ci/install_nanobind.sh 2.5.0
+        # 2026 images are broken with gtest/glfw installs
+      - name: deps
+        if: contains(matrix.config.image, '2026')
+        run: ./ci/install_gtest.sh latest
       - name: timestamp
         id: timestamp
         run: echo "timestamp=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" >> $GITHUB_OUTPUT
@@ -94,12 +99,11 @@ jobs:
         run: >
           ./ci/build.sh -v
           --build-type=${{ matrix.config.build }}
-          --components='core,python,bin,axcore,axbin,axtest'
+          --components='core,python,axcore,axbin,axtest'
           --cargs=\"
           ${{ matrix.config.cmake }}
           -DOPENVDB_AX_TEST_CMD_DOWNLOADS=ON
           -DUSE_EXPLICIT_INSTANTIATION=OFF
-          -DOPENVDB_CXX_STRICT=ON
           \"
       - name: test
         run: cd build && ctest -V
@@ -122,9 +126,13 @@ jobs:
     strategy:
       matrix:
         config:
-          # Last macos runner before M1 (macos-14)
-          - { runner: 'macos-13', cxx: 'clang++', build: 'Release', llvm: '15' }
-          - { runner: 'macos-13', cxx: 'clang++', build: 'Release', llvm: '13' }
+          - { runner: 'macos-15', cxx: 'clang++', build: 'Release', llvm: '21' }
+          - { runner: 'macos-14', cxx: 'clang++', build: 'Release', llvm: '21' }
+          - { runner: 'macos-14', cxx: 'clang++', build: 'Release', llvm: '20' }
+          - { runner: 'macos-14', cxx: 'clang++', build: 'Release', llvm: '19' }
+          - { runner: 'macos-14', cxx: 'clang++', build: 'Release', llvm: '18' }
+          - { runner: 'macos-14', cxx: 'clang++', build: 'Release', llvm: '17' }
+          - { runner: 'macos-14', cxx: 'clang++', build: 'Release', llvm: '16' }
       fail-fast: false
     steps:
       - uses: actions/checkout@v3
@@ -136,7 +144,7 @@ jobs:
         run: >
           ./ci/build.sh -v
           --build-type=${{ matrix.config.build }}
-          --components="core,python,bin,axcore,axbin,axtest"
+          --components="core,python,axcore,axbin,axtest"
           --cargs=\"
           -DOPENVDB_AX_TEST_CMD_DOWNLOADS=ON
           -DUSE_EXPLICIT_INSTANTIATION=OFF
@@ -152,15 +160,15 @@ jobs:
     if: |
       github.event_name == 'workflow_dispatch' &&
       github.event.inputs.type == 'grammar'
-    runs-on: ${{ (github.repository_owner == 'NVIDIA-Omniverse' && 'linux-amd64-cpu32') || (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-22.04-8c-32g-300h') || 'ubuntu-latest' }}
+    runs-on: ${{ (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-22.04-8c-32g-300h') || 'ubuntu-latest' }}
     container:
-      image: aswf/ci-openvdb:2023-clang15
+      image: aswf/ci-openvdb:2025-clang19.1
     steps:
     - uses: actions/checkout@v3
     - name: build
       run: ./ci/build.sh -v --components=axgr --target=openvdb_ax_grammar --cargs=\"-DOPENVDB_AX_GRAMMAR_NO_LINES=ON\"
     - name: upload grammar
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: ax_grammar
         path: ./build/openvdb_ax/openvdb_ax/openvdb_ax/grammar

.github/workflows/build.yml

@@ -33,11 +33,8 @@ on:
       - 'pendingchanges/**'
       - '**.md'
   schedule:
-    # run this workflow every day at 7am UTC except Monday
-    - cron:  '0 7 * * 0,2-6'
-    # run this workflow Monday 7am UTC
-    # warning: This pattern is checked in various places below
-    - cron:  '0 7 * * 1'
+    # run this workflow every day 7am UTC
+    - cron:  '0 7 * * *'
   workflow_dispatch:
     inputs:
       type:
@@ -62,12 +59,9 @@ jobs:
       github.event_name != 'workflow_dispatch' ||
       github.event.inputs.type == 'all' ||
       github.event.inputs.type == 'linux'
-    runs-on: ${{ (github.repository_owner == 'NVIDIA-Omniverse' && 'linux-amd64-cpu32') || (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-22.04-8c-32g-300h') || 'ubuntu-latest' }}
+    runs-on: ${{ (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-22.04-8c-32g-300h') || 'ubuntu-latest' }}
     name: >
-      linux-vfx:${{ matrix.config.image }}-
-      abi:${{ matrix.config.abi }}-
-      cxx:${{ matrix.config.cxx }}-
-      type:${{ matrix.config.build }}
+      linux:${{ matrix.config.image }}-abi:${{ matrix.config.abi }}-cxx:${{ matrix.config.cxx }}-type:${{ matrix.config.build }}
     container:
       image: aswf/ci-openvdb:${{ matrix.config.image }}
     env:
@@ -76,21 +70,22 @@ jobs:
     strategy:
       matrix:
         config:
-          - { cxx: clang++, image: '2024', abi: '12', build: 'Release', cmake: '' }
-          - { cxx: g++,     image: '2024', abi: '12', build: 'Release', cmake: '' }
-          - { cxx: clang++, image: '2024', abi: '12', build: 'Debug',   cmake: '' }
-          - { cxx: clang++, image: '2023', abi: '11', build: 'Release', cmake: '-DDISABLE_DEPENDENCY_VERSION_CHECKS=ON' }
-          - { cxx: g++,     image: '2023', abi: '11', build: 'Release', cmake: '-DDISABLE_DEPENDENCY_VERSION_CHECKS=ON' }
+          - { cxx: clang++, image: '2026',           abi: '13', build: 'Release', cmake: '-DOPENVDB_USE_FUTURE_ABI_13=ON' }
+          - { cxx: g++,     image: '2026',           abi: '13', build: 'Release', cmake: '-DOPENVDB_USE_FUTURE_ABI_13=ON' }
+          - { cxx: clang++, image: '2026',           abi: '13', build: 'Debug',   cmake: '-DOPENVDB_USE_FUTURE_ABI_13=ON' }
+          - { cxx: clang++, image: '2025-clang19.1', abi: '12', build: 'Release', cmake: '' }
+          - { cxx: clang++, image: '2024-clang17.2', abi: '11', build: 'Release', cmake: '-DDISABLE_DEPENDENCY_VERSION_CHECKS=ON' }
       fail-fast: false
     steps:
     - uses: actions/checkout@v3
     - name: nanobind
-      run: ./ci/install_nanobind.sh 2.0.0
-    - name: glfw
-      if: contains(matrix.config.image, '2023') == true
-      run: ./ci/install_glfw.sh 3.3.10
-    - name: install_gtest
-      run: ./ci/install_gtest.sh 1.15.2
+      run: ./ci/install_nanobind.sh 2.5.0
+      # 2026 images are broken with gtest/glfw installs
+    - name: deps
+      if: contains(matrix.config.image, '2026')
+      run: |
+        ./ci/install_gtest.sh latest
+        ./ci/install_glfw.sh latest
     - name: timestamp
       id: timestamp
       run: echo "timestamp=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" >> $GITHUB_OUTPUT
@@ -114,9 +109,8 @@ jobs:
         -DOPENVDB_ABI_VERSION_NUMBER=${{ matrix.config.abi }}
         \"
     - name: test
-      # Always run tests on weekly builds but skip Debug on commits as they take a while.
-      # https://github.community/t/distinct-job-for-each-schedule/17811/2
-      if: contains(github.event.schedule, '0 7 * * 1') || matrix.config.build == 'Release'
+      # Skip Debug on commits as they take a while.
+      if: github.event_name == 'schedule'|| matrix.config.build == 'Release'
       run: |
         cd build && ctest -V
         cd - && ./ci/test_install.sh
@@ -172,9 +166,15 @@ jobs:
       github.event_name != 'workflow_dispatch' ||
       github.event.inputs.type == 'all' ||
       github.event.inputs.type == 'mac'
-    runs-on: macos-13 # Last macos runner befor M1 (macos-14)
+    runs-on: ${{ matrix.config.image }}
+    name: ${{ matrix.config.image }}
     env:
       CXX: clang++
+    strategy:
+      matrix:
+        config:
+          - { image: macos-14 }
+          - { image: macos-15 }
     steps:
     - uses: actions/checkout@v3
     - name: install
@@ -191,3 +191,4 @@ jobs:
         \'
     - name: test
       run: cd build && ctest -V
+

.github/workflows/docs.yml

@@ -38,21 +38,15 @@ jobs:
     env:
       CXX: g++
     container:
-      # @note We can't update this as epydoc doesn't support python3. We'll
-      # need to re-write the python docs to use sphinx
-      image: aswf/ci-openvdb:2024
+      image: aswf/ci-openvdb:2026
     steps:
     - uses: actions/checkout@v4
     - name: install_doxygen
       run: ./ci/install_doxygen.sh 1_8_11
     - name: nanobind
-      #if: contains(matrix.config.image, '2023') == false
-      run: ./ci/install_nanobind.sh 2.0.0
-    # - name: install_epydoc
-    #   run: pip install epydoc
+      run: ./ci/install_nanobind.sh 2.5.0
     - name: install_latex
-      run: |
-        yum -y install texlive-latex-bin texlive-dvips texlive-collection-fontsrecommended texlive-collection-latexrecommended
+      run: ./ci/install_texlive.sh
     - name: build
       run: >
         ./ci/build.sh -v
@@ -65,9 +59,6 @@ jobs:
         -DUSE_EXPLICIT_INSTANTIATION=OFF
         -DDISABLE_DEPENDENCY_VERSION_CHECKS=ON
         \"
-    # - name: epydoc
-    #   run: |
-    #     epydoc --html -o /usr/local/share/doc/OpenVDB/html/python pyopenvdb
     - name: pre_deploy
       # Overwrite global SSH configuration
       #  https://github.com/peaceiris/actions-gh-pages/issues/719
@@ -106,7 +97,7 @@ jobs:
       github.event.inputs.deploy == 'coverage'
     runs-on: ubuntu-latest
     container:
-      image: aswf/ci-openvdb:2023
+      image: aswf/ci-openvdb:2025-clang19.1
     env:
       CXX: g++
     steps:

.github/workflows/fvdb.yml

@@ -1,118 +0,0 @@
-# Copyright Contributors to the OpenVDB Project
-# SPDX-License-Identifier: Apache-2.0
-#
-# GitHub Actions workflow file
-# https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions
-
-name: fVDB Codebuild
-
-on:
-  pull_request:
-    paths-ignore:
-        - 'CHANGES'
-        - 'CODEOWNERS'
-        - 'doc/**'
-        - 'openvdb/**'
-        - 'openvdb_cmd/**'
-        - 'openvdb_ax/**'
-        - 'openvdb_maya/**'
-        - 'openvdb_houdini/**'
-        - 'nanovdb/**'
-        - 'pendingchanges/**'
-        - '**.md'
-        - 'fvdb/debug/**'
-        - 'fvdb/docs/**'
-        - 'fvdb/examples/**'
-        - 'fvdb/notebooks/**'
-        - 'fvdb/scripts/**'
-
-permissions:
-  contents: read
-  id-token: write
-
-jobs:
-  # ---------------------------------------------------------------------------
-  # Linux GPU (AWS CodeBuild)
-  # ---------------------------------------------------------------------------
-
-  linux_gpu:
-    name: 'ci-openvdb 2024'
-    # Don't run on forks
-    if: github.repository == 'AcademySoftwareFoundation/openvdb'
-    # GH-hosted VM. The build runs in CentOS 7 'container' hard-coded in
-    # AWS CodeBuild project.
-    # TODO: Add support for dynamic GH Action defined CodeBuild
-    #       container choice.
-    runs-on: ubuntu-latest
-    steps:
-      - name: Verify AWS Credentials Set
-        run: |
-          if [ -z "${{ secrets.CODEBUILD_ID }}" ] || [ -z "${{ secrets.CODEBUILD_SECRET }}" ]; then
-            echo "Error: AWS credentials secrets not properly configured"
-            echo "Please ensure CODEBUILD_ID and CODEBUILD_SECRET are set in organization secrets"
-            exit 1
-          fi
-          echo "AWS credentials secrets are configured"
-      - name: Configure AWS Credentials
-        uses: aws-actions/configure-aws-credentials@v4
-        with:
-          aws-access-key-id: ${{ secrets.CODEBUILD_ID }}
-          aws-secret-access-key: ${{ secrets.CODEBUILD_SECRET }}
-          aws-region: us-west-2
-      - name: Verify AWS Authentication
-        run: |
-          echo "Testing AWS authentication..."
-          aws sts get-caller-identity || {
-            echo "Error: AWS authentication failed"
-            exit 1
-          }
-          echo "AWS authentication successful"
-      - name: CodeBuild Monitoring URLs
-        run: |
-          echo "🚀 Starting CodeBuild job..."
-          echo "Project: OpenVDB"
-          echo ""
-          echo "📊 Monitor the build progress at:"
-
-          # Check if public builds are enabled by looking for the public project URL
-          PUBLIC_URL=$(aws codebuild batch-get-projects --names OpenVDB --query 'projects[0].publicProjectUrl' --output text 2>/dev/null || echo "None")
-
-          if [ "$PUBLIC_URL" != "None" ] && [ "$PUBLIC_URL" != "null" ]; then
-            echo "📖 Public Build Results (no sign-in required):"
-            echo "   $PUBLIC_URL"
-            echo ""
-          fi
-
-          echo "🔒 AWS Console (requires sign-in):"
-          echo "   Project: https://console.aws.amazon.com/codesuite/codebuild/projects/OpenVDB/history"
-          echo ""
-          echo "ℹ️  Individual build URLs will be available once the job starts..."
-      - name: Run CodeBuild
-        id: codebuild
-        uses: aws-actions/aws-codebuild-run-build@v1
-        with:
-          project-name: OpenVDB
-          buildspec-override: ci/buildspec.yml
-      - name: CodeBuild Results
-        if: always()
-        run: |
-          echo "📋 CodeBuild Results:"
-          echo "Build ID: ${{ steps.codebuild.outputs.aws-build-id }}"
-          echo "Build Status: ${{ steps.codebuild.outputs.aws-build-status }}"
-          echo ""
-          echo "🔗 Detailed Build Links:"
-          if [ -n "$CODEBUILD_PUBLIC_BUILD_URL" ]; then
-            echo "📖 Public Build Details: $CODEBUILD_PUBLIC_BUILD_URL"
-          fi
-          echo "🔒 AWS Console Build Details: https://console.aws.amazon.com/codesuite/codebuild/projects/OpenVDB/build/${{ steps.codebuild.outputs.aws-build-id }}/"
-          echo ""
-          if [ "${{ steps.codebuild.outputs.aws-build-status }}" != "SUCCEEDED" ]; then
-            echo "❌ Build failed! Check the build logs at the links above for detailed error information."
-            echo "Common issues to check:"
-            echo "- Build environment configuration"
-            echo "- Source code compilation errors"
-            echo "- Missing dependencies"
-            echo "- Buildspec.yml configuration"
-          else
-            echo "✅ Build succeeded!"
-          fi

.github/workflows/fvdb_codestyle.yml

@@ -1,80 +0,0 @@
-name: fVDB Code Style
-on:
-  push:
-    branches:
-      - "pull-request/[0-9]+"
-    paths-ignore:
-        - 'CHANGES'
-        - 'CODEOWNERS'
-        - 'doc/**'
-        - 'ci/**'
-        - 'openvdb/**'
-        - 'openvdb_cmd/**'
-        - 'openvdb_ax/**'
-        - 'openvdb_maya/**'
-        - 'openvdb_houdini/**'
-        - 'openvdb_wolfram/**'
-        - 'tsc/**'
-        - 'nanovdb/**'
-        - 'pendingchanges/**'
-        - '**.md'
-        - 'fvdb/docs/**'
-        - 'fvdb/env/**'
-        - 'fvdb/notebooks/**'
-
-
-
-# Allow subsequent pushes to the same PR or REF to cancel any previous jobs.
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  test-python-black-lint:
-    name: Check Python code style with black
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: psf/black@stable
-        with:
-          options: "--check --verbose --target-version=py311 --line-length=120"
-          src: "fvdb/"
-          version: "~= 24.0"
-
-  test-cpp-clang-format-lint:
-    name: Check C++ code style with clang-format
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v4
-    - uses: DoozyX/clang-format-lint-action@v0.18.2
-      with:
-        source: 'fvdb/src/'
-        extensions: 'h,cpp,cc,cu,cuh'
-        clangFormatVersion: 18
-        style: file
-
-  include-guards:
-    name: Check include guards
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v4
-    - uses: swahtz/include-guards-check-action@master
-      with:
-        path: 'fvdb/src/'
-
-  check-spdx-identifiers:
-    name: Check SPDX identifiers
-    runs-on: ubuntu-latest
-    steps:
-    - name: checkout
-      uses: actions/checkout@v4
-    - uses: swahtz/spdx@feature/ignore_paths
-      with:
-        licenses: |-
-          Apache-2.0
-        ignore-paths: |-
-            openvdb/openvdb/math/Half.cc
-            openvdb/openvdb/math/Half.h
-            openvdb_wolfram/OpenVDBLink
-            openvdb_ax/openvdb_ax/grammar/generated
-            fvdb/projects/panoptic_segmentation/garfield/garfield

.github/workflows/houdini.yml

@@ -65,8 +65,8 @@ jobs:
     if: >
       ${{ needs.checksecret.outputs.HOUDINI_SECRETS == 'true' ||
           github.repository_owner == 'AcademySoftwareFoundation' }}
-    runs-on: ${{ (github.repository_owner == 'NVIDIA-Omniverse' && 'linux-amd64-cpu32') || (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-22.04-8c-32g-300h') || 'ubuntu-latest' }}
-    name: hou:${{ matrix.config.hou_hash }}-vfx:${{ matrix.config.image }}-cxx:${{ matrix.config.cxx }}
+    runs-on: ${{ (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-22.04-8c-32g-300h') || 'ubuntu-latest' }}
+    name: hou:${{ matrix.config.hou_hash }}-vfx:${{ matrix.config.image }}-cxx:${{ matrix.config.cxx }}-build:${{ matrix.config.build }}
     container:
       image: aswf/ci-base:${{ matrix.config.image }}
     env:
@@ -75,26 +75,18 @@ jobs:
     strategy:
       matrix:
         config:
-          - { cxx: clang++, image: '2024', hou_hash: '20_5', build: 'Release', components: 'core,hou,bin,view,render,python,test' }
-          - { cxx: clang++, image: '2023', hou_hash: '20_5', build: 'Debug',   components: 'core,hou,bin,view,render,python,test,axcore,axbin,axtest' }
-          - { cxx: g++,     image: '2023', hou_hash: '20_5', build: 'Release', components: 'core,hou,bin,view,render,python,test,axcore,axbin,axtest' }
-          - { cxx: clang++, image: '2023', hou_hash: '20_0-newabi', build: 'Release', components: 'core,hou,bin,view,render,python,test,axcore,axbin,axtest' }
-          - { cxx: g++,     image: '2023', hou_hash: '20_0-newabi', build: 'Release', components: 'core,hou,bin,view,render,python,test,axcore,axbin,axtest' }
+          - { cxx: clang++, image: '2026', hou_hash: '21_0', build: 'Release', components: 'core,hou,bin,view,render,python,test,axcore,axbin,axtest' }
+          - { cxx: clang++, image: '2026', hou_hash: '21_0', build: 'Debug',   components: 'core,hou,bin,view,render,python,test,axcore,axbin,axtest' }
+          - { cxx: g++,     image: '2026', hou_hash: '21_0', build: 'Release', components: 'core,hou,bin,view,render,python,test,axcore,axbin,axtest' }
+          - { cxx: clang++, image: '2024', hou_hash: '20_5', build: 'Release', components: 'core,hou,bin,view,render,python,test,axcore,axbin,axtest' }
+          - { cxx: g++,     image: '2024', hou_hash: '20_5', build: 'Release', components: 'core,hou,bin,view,render,python,test,axcore,axbin,axtest' }
       fail-fast: false
     steps:
-    - name: remove zstd
-      run: yum -y remove zstd
     - uses: actions/checkout@v3
     - name: nanobind
-      #if: contains(matrix.config.image, '2023') == false
-      run: ./ci/install_nanobind.sh 2.0.0
-    - name: glfw
-      if: contains(matrix.config.image, '2023') == true
-      run: ./ci/install_glfw.sh 3.3.10
-    - name: cppunit
-      run: ./ci/install_cppunit.sh 1.15.1
+      run: ./ci/install_nanobind.sh 2.5.0
     - name: install_gtest
-      run: ./ci/install_gtest.sh 1.15.2
+      run: ./ci/install_gtest.sh latest
     - name: timestamp
       id: timestamp
       run: echo "timestamp=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" >> $GITHUB_OUTPUT
@@ -125,7 +117,7 @@ jobs:
     - name: build
       run: |
         ./ci/build.sh -v \
-          --build-type=Release \
+          --build-type="${{ matrix.config.build }}" \
           --components="${{ matrix.config.components }}" \
           --cargs=\" \
             -DHOUDINI_ROOT=$HOME/houdini_install/hou \
@@ -135,6 +127,7 @@ jobs:
             -DDISABLE_DEPENDENCY_VERSION_CHECKS=ON \
             \"
     - name: test
+      if: matrix.config.build == 'Release'
       run: cd build && ctest -V
     # Keep ccache light by stripping out any caches not accessed in the last day
     - name: ccache_clean
@@ -165,7 +158,7 @@ jobs:
         cp hou/hou.tar.gz $HOME/houdini_install/hou.tar.gz
         cd $HOME/houdini_install && tar -xzf hou.tar.gz && cd -
     - name: install_deps
-      run: ./ci/install_macos.sh 15
+      run: ./ci/install_macos.sh 20
     - name: build
       run: |
         ./ci/build.sh -v \
@@ -178,8 +171,7 @@ jobs:
             -DDISABLE_CMAKE_SEARCH_PATHS=ON \
             -DDISABLE_DEPENDENCY_VERSION_CHECKS=ON \
             -DUSE_EXPLICIT_INSTANTIATION=OFF \
-            -DTbb_INCLUDE_DIR=$HOME/houdini_install/hou/Frameworks/Houdini.framework/Versions/Current/Resources/toolkit/include/tbb \
-            -DLLVM_DIR=/opt/homebrew/opt/llvm@15/lib/cmake/llvm \
+            -DLLVM_DIR=/opt/homebrew/opt/llvm@20/lib/cmake/llvm \
             -DCMAKE_INSTALL_PREFIX=${{ github.workspace }}/install \
             \"
     - name: test

.github/workflows/nanovdb.yml

@@ -51,7 +51,7 @@ jobs:
       github.event_name != 'workflow_dispatch' ||
       github.event.inputs.type == 'all' ||
       github.event.inputs.type == 'linux'
-    runs-on: ${{ (github.repository_owner == 'NVIDIA-Omniverse' && 'linux-amd64-cpu32') || (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-22.04-8c-32g-300h') || 'ubuntu-latest' }}
+    runs-on: ${{ (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-22.04-8c-32g-300h') || 'ubuntu-latest' }}
     name: >
       linux-nanovdb:cxx:${{ matrix.config.cxx }}-${{ matrix.config.build }}
     container:
@@ -61,16 +61,15 @@ jobs:
     strategy:
       matrix:
         config:
-          - { cxx: g++,     image: '2024', build: 'Release' }
-          - { cxx: g++,     image: '2024', build: 'Debug' }
-          - { cxx: clang++, image: '2024', build: 'Release' }
-          - { cxx: clang++, image: '2024', build: 'Debug' }
+          - { cxx: g++,     image: '2024-clang17.2', build: 'Release' }
+          - { cxx: g++,     image: '2024-clang17.2', build: 'Debug' }
+          - { cxx: clang++, image: '2024-clang17.2', build: 'Release' }
+          - { cxx: clang++, image: '2024-clang17.2', build: 'Debug' }
       fail-fast: false
     steps:
       - uses: actions/checkout@v3
       - name: setup_cuda_12
         run: |
-          yum -y install yum-utils
           echo "/usr/local/cuda-12/bin" >> $GITHUB_PATH
           echo "LD_LIBRARY_PATH=/usr/local/cuda-12/lib64:$LD_LIBRARY_PATH" >> $GITHUB_ENV
       - name: build
@@ -90,7 +89,7 @@ jobs:
           -DCMAKE_POSITION_INDEPENDENT_CODE=ON
           \'
       - name: test
-        run: cd build && sudo ctest -V -E ".*cuda.*"
+        run: cd build && sudo ctest -V -E ".*cuda.*|.*mgpu.*"
 
   windows-nanovdb:
     if: |
@@ -118,6 +117,7 @@ jobs:
       shell: powershell
       run: .\ci\install_windows.ps1
     - name: build
+    # nvcc doesn't set _WIN32 when run in bash so we need to set it manually
       shell: bash
       run: >
         ./ci/build.sh -v
@@ -129,13 +129,14 @@ jobs:
         -DUSE_EXPLICIT_INSTANTIATION=OFF
         -DNANOVDB_USE_CUDA=ON
         -DCMAKE_CUDA_ARCHITECTURES="80"
+        -DCMAKE_CUDA_FLAGS="-D_WIN32"
         -DNANOVDB_USE_OPENVDB=ON
         -DVCPKG_TARGET_TRIPLET=${VCPKG_DEFAULT_TRIPLET}
         -DCMAKE_TOOLCHAIN_FILE=\"${VCPKG_INSTALLATION_ROOT}\\scripts\\buildsystems\\vcpkg.cmake\"
         \'
     - name: test
       shell: bash
-      run: cd build && ctest -V -E ".*cuda.*"
+      run: cd build && ctest -V -E ".*cuda.*|.*mgpu.*"
 
   macos-nanovdb:
     if: |
@@ -148,8 +149,8 @@ jobs:
     strategy:
       matrix:
         config:
-          - { runner: 'macos-13', cxx: 'clang++', build: 'Release' }
-          - { runner: 'macos-13', cxx: 'clang++', build: 'Debug'   }
+          - { runner: 'macos-14', cxx: 'clang++', build: 'Release' }
+          - { runner: 'macos-14', cxx: 'clang++', build: 'Debug'   }
       fail-fast: false
     steps:
       - uses: actions/checkout@v3
@@ -162,22 +163,22 @@ jobs:
           ./ci/build.sh -v
           --build-type=${{ matrix.config.build }}
           --components=core,nano,nanotest,nanoexam,nanobench,nanotool
-          --cargs=\'-DUSE_EXPLICIT_INSTANTIATION=OFF -DNANOVDB_USE_CUDA=OFF -DNANOVDB_USE_OPENVDB=ON\'
+          --cargs=\'-DUSE_EXPLICIT_INSTANTIATION=OFF -DNANOVDB_USE_CUDA=OFF -DNANOVDB_USE_OPENVDB=ON -DCMAKE_INSTALL_PREFIX=${{ github.workspace }}/install \'
       - name: test
-        run: cd build && ctest -V -E ".*cuda.*"
+        run: cd build && ctest -V -E ".*cuda.*|.*mgpu.*"
 
   nanovdb-lite:
     if: |
       github.event_name != 'workflow_dispatch' ||
       github.event.inputs.type == 'all' ||
       github.event.inputs.type == 'linux'
-    runs-on: ${{ (github.repository_owner == 'NVIDIA-Omniverse' && 'linux-amd64-cpu32') || (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-22.04-8c-32g-300h') || 'ubuntu-latest' }}
+    runs-on: ${{ (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-22.04-8c-32g-300h') || 'ubuntu-latest' }}
     container:
-      image: aswf/ci-openvdb:2024
+      image: aswf/ci-openvdb:2024-clang17.2
     steps:
       - uses: actions/checkout@v3
       - name: install_gtest
-        run: ./ci/install_gtest.sh 1.15.2
+        run: ./ci/install_gtest.sh latest
       - name: build_and_test
         run: |
           cd nanovdb/nanovdb

.github/workflows/weekly.yml

@@ -61,7 +61,7 @@ jobs:
       (github.event_name != 'workflow_dispatch' ||
        github.event.inputs.type == 'all' ||
        github.event.inputs.type == 'houdini')
-    runs-on: ${{ (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-20.04-8c-32g-300h') || 'ubuntu-latest' }}
+    runs-on: ${{ (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-22.04-8c-32g-300h') || 'ubuntu-latest' }}
     name: linux-houdini:${{ matrix.config.hou_hash }}
     env:
       CXX: clang++
@@ -70,23 +70,13 @@ jobs:
     strategy:
       matrix:
         config:
-          - { houdini_version: '20.0', platform: 'linux_x86_64_gcc11.2', hou_hash: '20_0-newabi' }
+          - { houdini_version: '21.0', platform: 'linux_x86_64_gcc11.2', hou_hash: '21_0' }
           - { houdini_version: '20.5', platform: 'linux_x86_64_gcc11.2', hou_hash: '20_5' }
       fail-fast: false
     container:
       image: aswf/ci-base:2024
     steps:
     - uses: actions/checkout@v3
-    # We bumped from the 2021 CI image to 2023 here to fix some OpenSSL issues
-    # with the Houdini download script. In so doing we broke some of the caching
-    # between this job and the jobs in houdini.yml which _don't_ use the 2023
-    # image yet. The issue is that the cache action will use zstd if it's
-    # available to zip the cache and this causes it to be inserted with a unique
-    # hash which images without zstd (i.e. the 2021/2022 images don't have
-    # access to). For now, uninstall zstd here instead of installing it
-    # everywhere and ask the LF to add zstd to the older base images.
-    - name: remove zstd
-      run: yum -y remove zstd
     - name: timestamp
       id: timestamp
       run: echo "timestamp=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" >> $GITHUB_OUTPUT
@@ -113,7 +103,7 @@ jobs:
     # Note that macos-14 (current macos-latest) switches to M1. We could instead test
     # the arm build here instead of the x86 one.
     runs-on: macos-latest
-    name: macos-houdini-20
+    name: macos-houdini
     env:
       HOUDINI_CLIENT_ID: ${{ secrets.HOUDINI_CLIENT_ID }}
       HOUDINI_SECRET_KEY: ${{ secrets.HOUDINI_SECRET_KEY }}
@@ -123,7 +113,7 @@ jobs:
       id: timestamp
       run: echo "timestamp=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" >> $GITHUB_OUTPUT
     - name: download_houdini
-      run: ./ci/download_houdini.sh 20.0 macosx_arm64_clang14.0_13 --prod
+      run: ./ci/download_houdini.sh 21.0 macosx_arm64_clang15.0_14 --prod
     - name: install_houdini
       run: |
         mkdir $HOME/houdini_install
@@ -146,31 +136,38 @@ jobs:
       github.event_name != 'workflow_dispatch' ||
       github.event.inputs.type == 'all' ||
       github.event.inputs.type == 'extra'
-    runs-on: ${{ (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-20.04-8c-32g-300h') || 'ubuntu-latest' }}
+    runs-on: ${{ (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-22.04-8c-32g-300h') || 'ubuntu-latest' }}
     name: linux-extra:${{ matrix.config.name }}
     container:
-      image: aswf/ci-openvdb:2024
+      image: aswf/ci-openvdb:${{ matrix.config.image }}
     env:
       CXX: clang++
     strategy:
       matrix:
         config:
-          - { name: 'all',   build: 'Release', components: 'core,python,bin,view,render,test',               cmake: '-DUSE_BLOSC=ON  -DUSE_ZLIB=ON  -DUSE_EXR=ON  -DUSE_PNG=ON'  }
-          - { name: 'lite',  build: 'Release', components: 'core,python,bin,view,render,test',               cmake: '-DUSE_BLOSC=OFF -DUSE_ZLIB=OFF -DUSE_EXR=OFF -DUSE_PNG=OFF -DOPENVDB_USE_DELAYED_LOADING=OFF' }
-          - { name: 'half',  build: 'Release', components: 'core,python,bin,view,render,test',               cmake: '-DUSE_BLOSC=OFF -DUSE_IMATH_HALF=ON' }
-          - { name: 'sse',   build: 'Release', components: 'core,python,bin,view,render,test',               cmake: '-DOPENVDB_SIMD=SSE42' }
-          - { name: 'avx',   build: 'Release', components: 'core,python,bin,view,render,test',               cmake: '-DOPENVDB_SIMD=AVX' }
-          - { name: 'numpy', build: 'Release', components: 'core,python,bin,view,render,test',               cmake: '-DUSE_NUMPY=ON -DOPENVDB_PYTHON_WRAP_ALL_GRID_TYPES=ON' }
-          - { name: 'asan',  build: 'asan',    components: 'core,test',                                      cmake: '-DNANOVDB_USE_OPENVDB=ON -DOPENVDB_AX_STATIC=OFF -DOPENVDB_CORE_STATIC=OFF -DUSE_BLOSC=OFF' } # We never called blosc_destroy(), so disable blosc to silence these errors
-          - { name: 'ubsan', build: 'ubsan',   components: 'core,test',                                      cmake: '-DCMAKE_CXX_FLAGS="-Wno-deprecated-declarations" ' }
-          - { name: 'c++20', build: 'Release', components: 'core,test',                                      cmake: '-DCMAKE_CXX_STANDARD=20' }
-          - { name: 'conf',  build: 'Release', components: 'core,python,bin,view,render,test',               cmake: '-DCMAKE_FIND_PACKAGE_PREFER_CONFIG=ON' }
+          - { name: 'all',    image: '2026',           build: 'Release', components: 'core,python,bin,view,render,test', cmake: '-DUSE_BLOSC=ON  -DUSE_ZLIB=ON  -DUSE_EXR=ON  -DUSE_PNG=ON'  }
+          - { name: 'lite',   image: '2026',           build: 'Release', components: 'core,python,bin,view,render,test', cmake: '-DUSE_BLOSC=OFF -DUSE_ZLIB=OFF -DUSE_EXR=OFF -DUSE_PNG=OFF -DOPENVDB_USE_DELAYED_LOADING=OFF' }
+          - { name: 'half',   image: '2026',           build: 'Release', components: 'core,python,bin,view,render,test', cmake: '-DUSE_BLOSC=OFF -DUSE_IMATH_HALF=ON' }
+          - { name: 'sse',    image: '2026',           build: 'Release', components: 'core,python,bin,view,render,test', cmake: '-DOPENVDB_SIMD=SSE42' }
+          - { name: 'avx',    image: '2026',           build: 'Release', components: 'core,python,bin,view,render,test', cmake: '-DOPENVDB_SIMD=AVX' }
+          - { name: 'pygrid', image: '2026',           build: 'Release', components: 'core,python,bin,view,render,test', cmake: '-DOPENVDB_PYTHON_WRAP_ALL_GRID_TYPES=ON' }
+          - { name: 'asan',   image: '2026',           build: 'asan',    components: 'core,test',                        cmake: '-DDISABLE_DEPENDENCY_VERSION_CHECKS=ON -DNANOVDB_USE_OPENVDB=ON -DOPENVDB_AX_STATIC=OFF -DOPENVDB_CORE_STATIC=OFF -DUSE_BLOSC=OFF' } # We never called blosc_destroy(), so disable blosc to silence these errors
+          - { name: 'ubsan',  image: '2026',           build: 'ubsan',   components: 'core,test',                        cmake: '-DDISABLE_DEPENDENCY_VERSION_CHECKS=ON -DCMAKE_CXX_FLAGS="-Wno-deprecated-declarations" ' }
+          - { name: 'c++20',  image: '2026',           build: 'Release', components: 'core,test',                        cmake: '-DCMAKE_CXX_STANDARD=20' }
+          - { name: 'conf',   image: '2026',           build: 'Release', components: 'core,python,bin,view,render,test', cmake: '-DCMAKE_FIND_PACKAGE_PREFER_CONFIG=ON' }
       fail-fast: false
     steps:
     - uses: actions/checkout@v3
     - name: nanobind
-      #if: contains(container.image, '2023') == false
-      run: ./ci/install_nanobind.sh 2.0.0
+      run: ./ci/install_nanobind.sh 2.5.0
+      # 2026 images are broken with gtest/glfw/exr installs
+    - name: deps
+      if: contains(matrix.config.image, '2026')
+      run: |
+        ./ci/install_gtest.sh latest
+        ./ci/install_glfw.sh latest
+        ./ci/install_imath.sh v3.2.2
+        ./ci/install_exr.sh v3.2.2
     - name: build
       run: >
         ./ci/build.sh -v
@@ -192,21 +189,22 @@ jobs:
     strategy:
       matrix:
         config:
-          - { runson: ubuntu-latest, cxx: g++,     cmake: '' }
+          # llvm-17 is currently the default which has symbol issues with the python module
+          - { runson: ubuntu-latest, cxx: g++, cmake: '-DOPENVDB_PYTHON_USE_AX=OFF' }
           # Disable the clang job for now. See https://github.com/actions/runner-images/issues/8659
           # - { runson: ubuntu-latest, cxx: clang++, cmake: '' }
           # @todo gcc on macos
-          - { runson: macos-latest,  cxx: '',      cmake: '-DCMAKE_CXX_COMPILER=/opt/homebrew/opt/llvm@15/bin/clang++ -DLLVM_DIR=/opt/homebrew/opt/llvm@15/lib/cmake/llvm' }
+          - { runson: macos-latest, cxx: '', cmake: '-DLLVM_DIR=/opt/homebrew/opt/llvm@20/lib/cmake/llvm' }
       fail-fast: false
     steps:
       - uses: actions/checkout@v3
       - name: install_deps
         run: |
           if [ "$RUNNER_OS" == "Linux" ]; then
-            sudo apt-get -q install -y libboost-dev libboost-iostreams-dev libtbb-dev libblosc-dev llvm-dev libgtest-dev libcppunit-dev
-            ./ci/install_nanobind.sh 2.0.0
+            sudo apt-get -q install -y libboost-dev libboost-iostreams-dev libtbb-dev libblosc-dev libgtest-dev libgmock-dev python3-numpy
+            ./ci/install_nanobind.sh 2.5.0
           elif [ "$RUNNER_OS" == "macOS" ]; then
-            ./ci/install_macos.sh 15
+            ./ci/install_macos.sh 20
             ./ci/install_tbb_macos.sh
           else
             echo "$RUNNER_OS not supported"; exit 1
@@ -216,7 +214,12 @@ jobs:
           ./ci/build.sh -v
           --build-type=Release
           --components=\"core,axcore,python,bin,render,test,axbin\"
-          --cargs=\"-DCMAKE_CXX_STANDARD=20 -DOPENVDB_USE_DELAYED_LOADING=OFF -DCMAKE_INSTALL_PREFIX=${{ github.workspace }}/install ${{ matrix.config.cmake }}\"
+          --cargs=\'
+          -DCMAKE_CXX_STANDARD=20
+          -DOPENVDB_USE_DELAYED_LOADING=OFF
+          -DCMAKE_INSTALL_PREFIX=${{ github.workspace }}/install
+          ${{ matrix.config.cmake }}
+          \'
       - name: test
         run: cd build && ctest -V
 
@@ -238,9 +241,9 @@ jobs:
           # Boost as both shared and static libs are installed.
           # USE_EXPLICIT_INSTANTIATION is disabled for debug static libraries
           # due to disk space constraints
-          - { vc: 'x64-windows-static', components: 'core,bin,view,render,test',       build: 'Release', cmake: '-A x64 -G \"Visual Studio 17 2022\" -DOPENVDB_CORE_SHARED=OFF -DUSE_STATIC_DEPENDENCIES=ON -DBLOSC_USE_EXTERNAL_SOURCES=ON' }
+          # - { vc: 'x64-windows-static', components: 'core,bin,view,render,test',       build: 'Release', cmake: '-A x64 -G \"Visual Studio 17 2022\" -DOPENVDB_CORE_SHARED=OFF -DUSE_STATIC_DEPENDENCIES=ON -DBLOSC_USE_EXTERNAL_SOURCES=ON' }
           - { vc: 'x64-windows',        components: 'core,bin,view,render,python,test', build: 'Release', cmake: '-A x64 -G \"Visual Studio 17 2022\" -DOPENVDB_CORE_STATIC=OFF' }
-          - { vc: 'x64-windows',        components: 'core,bin,view,render,python,test', build: 'Debug',   cmake: '-A x64 -G \"Visual Studio 17 2022\" -DOPENVDB_CORE_STATIC=OFF' }
+          # - { vc: 'x64-windows',        components: 'core,bin,view,render,python,test', build: 'Debug',   cmake: '-A x64 -G \"Visual Studio 17 2022\" -DOPENVDB_CORE_STATIC=OFF' }
       fail-fast: false
     steps:
     - uses: actions/checkout@v3
@@ -284,7 +287,7 @@ jobs:
       github.event_name != 'workflow_dispatch' ||
       github.event.inputs.type == 'all' ||
       github.event.inputs.type == 'ax'
-    runs-on: ${{ (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-20.04-8c-32g-300h') || 'ubuntu-latest' }}
+    runs-on: ${{ (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-22.04-8c-32g-300h') || 'ubuntu-latest' }}
     name: >
       linux-ax:${{ matrix.config.image }}-cxx:${{ matrix.config.cxx }}-${{ matrix.config.build }}
     container:
@@ -294,15 +297,14 @@ jobs:
     strategy:
       matrix:
         config:
-          # Unified
-          - { image: '2023-clang15', cxx: 'clang++', build: 'Release', components: 'core,bin,axcore,axbin,axtest', cmake: '' }
-          - { image: '2023-clang15', cxx: 'g++',     build: 'Release', components: 'core,bin,axcore,axbin,axtest', cmake: '' }
+          - { image: '2025-clang18.1', cxx: 'clang++', build: 'Release', components: 'core,axcore,axbin,axtest', cmake: '' }
+          # @note  LLVM 17 builds are incompatible with the vdb python plugin on linux
+          - { image: '2024-clang17.2', cxx: 'clang++', build: 'Release', components: 'core,axcore,axbin,axtest', cmake: '-DOPENVDB_PYTHON_USE_AX=OFF' }
       fail-fast: false
     steps:
       - uses: actions/checkout@v3
       - name: nanobind
-        #f: contains(matrix.config.image, '2023') == false
-        run: ./ci/install_nanobind.sh 2.0.0
+        run: ./ci/install_nanobind.sh 2.5.0
       - name: build
         run: >
           ./ci/build.sh -v
@@ -313,6 +315,7 @@ jobs:
           -DOPENVDB_AX_TEST_CMD_DOWNLOADS=ON
           -DUSE_EXPLICIT_INSTANTIATION=OFF
           -DOPENVDB_CXX_STRICT=ON
+          -DOPENVDB_BUILD_VDB_TOOL=OFF
           \"
       - name: clean
         if: matrix.config.components == 'core'
@@ -328,6 +331,7 @@ jobs:
           -DOPENVDB_AX_TEST_CMD_DOWNLOADS=ON
           -DUSE_EXPLICIT_INSTANTIATION=OFF
           -DOPENVDB_CXX_STRICT=ON
+          -DOPENVDB_BUILD_VDB_TOOL=OFF
           \"
       - name: test
         run: cd build && ctest -V
@@ -339,14 +343,14 @@ jobs:
       github.event_name != 'workflow_dispatch' ||
       github.event.inputs.type == 'all' ||
       github.event.inputs.type == 'ax'
-    runs-on: macos-13
+    runs-on: ${{ matrix.config.runner }}
     name: macos-cxx:${{ matrix.config.cxx }}-llvm:${{ matrix.config.llvm }}-${{ matrix.config.build }}
     env:
       CXX: ${{ matrix.config.cxx }}
     strategy:
       matrix:
         config:
-          - { cxx: 'clang++', build: 'Release', llvm: '15' }
+          - { runner: 'macos-latest', cxx: 'clang++', build: 'Release', llvm: '20' }
       fail-fast: false
     steps:
       - uses: actions/checkout@v3
@@ -376,7 +380,7 @@ jobs:
       github.event.inputs.type == 'all' ||
       github.event.inputs.type == 'ax'
     runs-on: ${{ (github.repository_owner == 'AcademySoftwareFoundation' && 'windows-2022-8c-32g-300h') || 'windows-latest' }}
-    name: windows-vc:${{ matrix.config.vc }}-type:${{ matrix.config.build }}
+    name: ${{ matrix.config.vc }}-${{ matrix.config.crt }}-${{ matrix.config.build }}-llvm${{ matrix.config.llvm }}
     env:
       VCPKG_DEFAULT_TRIPLET: ${{ matrix.config.vc }}
       # Export this with '' avoid bash treating \ as escape
@@ -390,17 +394,22 @@ jobs:
           # @todo  We don't currently run the axtests with shared builds of ax
           # due to symbol issues using LLVM as a static lib (which is the only
           # option on Windows).
-          - { vc: 'x64-windows',        crt: 'MD',  components: 'core,bin,axcore,axbin,python', build: 'Release', cmake: '-DOPENVDB_CORE_STATIC=OFF -DOPENVDB_AX_STATIC=OFF' }
-          - { vc: 'x64-windows-static', crt: 'MT',  components: 'core,bin,axcore,axbin,axtest', build: 'Release', cmake: '-DOPENVDB_CORE_SHARED=OFF -DOPENVDB_AX_SHARED=OFF -DUSE_STATIC_DEPENDENCIES=ON -DBLOSC_USE_EXTERNAL_SOURCES=ON' }
-          - { vc: 'x64-windows-static', crt: 'MTd', components: 'core,bin,axcore,axbin,axtest', build: 'Debug',   cmake: '-DOPENVDB_CORE_SHARED=OFF -DOPENVDB_AX_SHARED=OFF -DUSE_STATIC_DEPENDENCIES=ON -DBLOSC_USE_EXTERNAL_SOURCES=ON' }
+          # @note  currently only test static builds with MT as building LLVM as
+          # a shared lib on windows is a bit dicey
+          - { vc: 'x64-windows-static', llvm: '18.1.0', crt: 'MultiThreaded',      components: 'core,axcore,axbin,axtest', build: 'Release', cmake: '-DOPENVDB_CORE_SHARED=OFF -DOPENVDB_AX_SHARED=OFF -DUSE_STATIC_DEPENDENCIES=ON -DBLOSC_USE_EXTERNAL_SOURCES=ON' }
+          - { vc: 'x64-windows-static', llvm: '18.1.0', crt: 'MultiThreadedDebug', components: 'core,axcore,axbin,axtest', build: 'Debug',   cmake: '-DOPENVDB_CORE_SHARED=OFF -DOPENVDB_AX_SHARED=OFF -DUSE_STATIC_DEPENDENCIES=ON -DBLOSC_USE_EXTERNAL_SOURCES=ON' }
+          - { vc: 'x64-windows',        llvm: '18.1.0', crt: 'MultiThreadedDLL',   components: 'core,axcore,axbin',        build: 'Release', cmake: '-DOPENVDB_CORE_STATIC=OFF -DOPENVDB_AX_STATIC=OFF' }
+          - { vc: 'x64-windows-static', llvm: '15.0.0', crt: 'MultiThreaded',      components: 'core,axcore,axbin,axtest', build: 'Release', cmake: '-DOPENVDB_CORE_SHARED=OFF -DOPENVDB_AX_SHARED=OFF -DUSE_STATIC_DEPENDENCIES=ON -DBLOSC_USE_EXTERNAL_SOURCES=ON' }
       fail-fast: false
     steps:
     - uses: actions/checkout@v3
     - name: llvm
-      run: ./ci/install_llvm_windows.sh ${{ matrix.config.crt }}
+      run: ./ci/install_llvm_windows.sh ${{ matrix.config.llvm }} ${{ matrix.config.crt }}
     - name: install
       shell: powershell
-      run: .\ci\install_windows.ps1
+      run: |
+        vcpkg update
+        vcpkg install tbb gtest
     - name: build
       run: >
         ./ci/build.sh -v
@@ -408,10 +417,13 @@ jobs:
         --components="${{ matrix.config.components }}"
         --cargs=\'
         -A x64 -G \"Visual Studio 17 2022\"
+        -DOPENVDB_USE_DELAYED_LOADING=OFF
+        -DUSE_BLOSC=OFF \
+        -DUSE_ZLIB=OFF \
         -DVCPKG_TARGET_TRIPLET=${VCPKG_DEFAULT_TRIPLET}
         -DCMAKE_TOOLCHAIN_FILE=\"${VCPKG_INSTALLATION_ROOT}\\scripts\\buildsystems\\vcpkg.cmake\"
         -DMSVC_COMPRESS_PDB=ON
-        -DOPENVDB_AX_TEST_CMD_DOWNLOADS=ON
+        -DOPENVDB_AX_TEST_CMD_DOWNLOADS=OFF
         -DUSE_EXPLICIT_INSTANTIATION=OFF
         -DLLVM_DIR=\"${HOME}\\llvm_install\\lib\\cmake\\llvm\"
         -DCMAKE_INSTALL_PREFIX=\"${VDB_INSTALL_PREFIX}\"
@@ -434,7 +446,7 @@ jobs:
     if: |
       github.event_name != 'workflow_dispatch' ||
       github.event.inputs.type == 'all' ||
-      github.event.inputs.type == 'win'
+      github.event.inputs.type == 'winnano'
     runs-on: ${{ (github.repository_owner == 'AcademySoftwareFoundation' && 'windows-2022-8c-32g-300h') || 'windows-latest' }}
     env:
       VCPKG_DEFAULT_TRIPLET: ${{ matrix.config.vc }}
@@ -494,13 +506,13 @@ jobs:
       github.event_name != 'workflow_dispatch' ||
       github.event.inputs.type == 'all' ||
       github.event.inputs.type == 'blosc'
-    runs-on: ${{ (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-20.04-8c-32g-300h') || 'ubuntu-latest' }}
+    runs-on: ${{ (github.repository_owner == 'AcademySoftwareFoundation' && 'ubuntu-22.04-8c-32g-300h') || 'ubuntu-latest' }}
     name: linux-blosc:${{ matrix.blosc }}
     container:
-      image: aswf/ci-base:2023
+      image: aswf/ci-openvdb:2025-clang19.1
     strategy:
       matrix:
-        blosc: ['1.18.0','1.19.0','1.20.0','1.21.0']
+        blosc: ['1.21.0', 'latest']
       fail-fast: false
     steps:
     - uses: actions/checkout@v3
@@ -590,7 +602,7 @@ jobs:
         -strict
         -extended
     - name: upload_report
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       if: always()
       with:
         name: abi_report

.gitignore

@@ -1,4 +1,2 @@
 /build/*
-**/src/benchmarks/build/*
-nanovdb/nanovdb/build/*
 .DS_Store

CHANGES

@@ -1,18 +1,163 @@
 OpenVDB Version History
 =======================
 
-Version 12.0.2 - In development
+Version 12.1.2 - In development
+
+
+Version 12.1.1 - September 30, 2025
+
+  OpenVDB AX:
+    Fixes:
+    - Fixed an issue which was causing host specific optimization passes to be
+      omitted when using LLVM 16 and higher.
+
+  Houdini:
+    - Fixed a compilation issue with the OpenVDB Activate SOP with Houdini 21
+    [Reported by @callen128]
+
+
+Version 12.1.0 - August 8, 2025
+
+  OpenVDB:
+    New features:
+    - New level set constructor tools::createLevelSetCapsule creates a grid
+      containing a narrow-band level set representation of a capsule (tube
+      with constant radius and sphere caps).
+    - New level set constructor tools::createLevelSetTaperedCapsule creates a
+      grid containing a narrow-band level set representation of a tapered
+      capsule (tube with sphere caps and different radii at both ends, or
+      equivalently the convex hull of two spheres with possibly different
+      centers and radii).
+    - New level set constructor tools::createLevelSetTubeComplex creates a grid
+      containing a narrow-band level set representation of a tube complex (a
+      collection of capsules or tapered capsules defined by endpoint coordinates
+      and segment indices).
+    - New level set constructor tools::createLevelSetDilatedMesh creates a grid
+      containing a narrow-band level set representation of a dilated surface
+      mesh (dilated by a radius in all directions).
+    - New class tools::ConvexVoxelizer, used by the above methods, which can be
+      inherited to implement a convex level set constructor.
+    - Introduced anisotropic surfacing tools in points/PointRasterizeSDF.h and
+      principal component analysis (PCA) methods in points/PrincipalComponentAnalysis.h.
+      The latter tool analyses point neighborhoods and computes affine
+      transformations representing elliptical distributions. The prior tool
+      takes rotational and stretch point attributes (optionally computed from
+      the prior PCA methods) and generates anisotropic surfaces.
+
+    Improvements:
+    - Significantly improved the performance of all LeafNode ValueIterators,
+      up to 5x on some platforms and up to 10x when delay loading is enabled.
+      Construction of a ValueIterator from a leaf node now requests the leaf
+      buffers ahead of iteration to avoid potentially expensive API calls.
+    - Improved the performance of PointRasterizeSDF.h tools with larger radii
+      with better bound computation approximations.
+    - Significant performance improvement to delay loaded files - the warning
+      logic which checks the underlying mapped file for the last modified time
+      has been removed, resulting in performance gains upwards of 10x when
+      loading in node data buffers. Note that the check that was removed is
+      entirely redundant on Windows and would only print a warning on other
+      system.
+      [Contributed by jjtParadox]
+    - Added OPENVDB_HAS_INVOKABLE_MEMBER_FUNCTION and OPENVDB_HAS_MEMBER_FUNCTION
+      macros to help determine the presence and compatibility of interface
+      member functions at compile time.
+    - Added OPENVDB_ASSUME macros to mimic builtin assume and C++23 assume
+      attributes.
+    - Improved read and write of PLY files with vdb_tool so they support Vec3d
+      and 64 bit attributes. Changed vdb_tool version number from 10.6.1 to
+      10.7.0.
+
+    API Changes:
+    - Mat3 and Mat4 functions have been marked [[nodiscard]] where it may be
+      confusing if they are operating in place or returning a result, in
+      particular tranpose, invert, adjoint, and timesDiagonal.
+    - Re-worked the API in PointRasterizeSDF.h with the addition of anisotropic
+      surfacing kernels. The new API exposes more concise free functions which
+      take structs of parameters. The old API remains supported but is
+      deprecated.
+    - Deprecated providing a filter or interrupter as arguments to
+      points::rasterize. These can instead be implemented on user transfer
+      schemes.
+    - Transfer schemes provided to points::rasterize can now optionally
+      implement a rasterizePoints callback that takes a range of points per
+      voxel.
+
+    Fixes:
+    - Fixed a bug in points::rasterizeSpheres and points::rasterizeSmoothSpheres
+      which could cause sections of the generated surface to incorrectly be
+      marked as negative interior values.
+    - Fixed a bug in points::rasterizeSmoothSpheres which could result in
+      incomplete surface reconstruction with significantly larger search
+      distances.
+    - Fixed some precision issues in various Matrix methods.
+    - Fixed bugs in vdb_tool that prevented build with newer namespaces in
+      nanovdb.
+
+  OpenVDB AX:
+    Improvements:
+    - Added support for LLVM versions greater than 15. Upgraded CI to test with
+      LLVM versions 16, 17, 18, 19 and 20.
+    - As of this release, LLVM 15 is the minimum required version for OpenVDB
+      AX. Note that there is an issue with LLVM 17 symbols which makes it
+      incompatible with the OpenVDB Python plugin. AS such, LLVM version 18 and
+      greater are the recommended LLVM versions to use, with LLVM 18 being the
+      new future minimum version.
+    - Significant performance improvement to the compilation of AX kernels when
+      using LLVM 18 and greater.
+    - Significant backend refactoring to AX IR generation to support newer
+      versions of LLVM. In particular, parts of the codegen::Function and
+      codegen::FunctionBuilder API require new usage from LLVM 16 due to
+      the LLVM opaque pointer changes. If you're not using the OpenVDB AX
+      Function codegen API then no client changes should be necessary.
+    - Migrated OpenVDB AX unit tests from cppunit to gtest
+      [Contributed by Tim Straubinger]
+
+    Fixes:
+    - Fixed a case of undefined behaviour when explicitly casting variables to
+      the same type as their storage type e.g:
+        double a; double b = double(a);
+    - Fixed an AX compiler error which would produce invalid IR when using 64bit
+      integer variables for matrix array offsetting e.g:
+        int64 a = 0; mat4f b = 1; float c = b[a,a];
+
+  NanoVDB:
+    - Added nanovdb::openToIndexVDB, which can convert an OpenVDB grid into a
+      NanoVDB IndexGrid.
+    - Added new options "--index" and "--onIndex" to the command-line tool
+      nanovdb_convert so it can produce IndexGrids.
+    - Fixed memory leak in DeviceBuffer.
+    - Added constructor for DeviceBuffer from an existing HostBuffer.
+    - Added VoxelBlockManager, an acceleration structure for sequential access
+      and stencil ops over active voxels.
+    - Added helper functions for kernel launches with shared memory.
+    - Added support for CUDA 13.0.
+    - Fix warnings and compilation errors for GCC and Clang.
+    - Fixed inconsistent usage of util::cuda::mallocAsync/freeAsync that
+      affected vGPUs.
+    - Added support for custom memory resources in PointsToGrid.
+    - Fixed race condition in split/mergeGridHandles.
+    - Fixed offset bug in nanovdb::tools::cuda::IndexToGrid related to non-POD
+      build types.
+      [Contributed by Andreas Henne]
+
+  Houdini:
+    - Define OP_InputIdx and OP_OutputIdx for Houdini 21.0 compatibility
+    - Add Houdini 21 style camera interface to support LOP cameras
+    - Include env flag for avoiding stream writing (was backported to 19.5)
 
 
 Version 12.0.1 - April 3, 2025
 
   OpenVDB:
     New features:
-    - Added read and write support for OFF (Object File Format) files to vdb_tool
+    - Added read and write support for OFF (Object File Format) files to
+      vdb_tool
 
     Build:
-    - Fixed a build issue with vdb_render on Windows with newer versions of glew not including glu.h by default
-    - Fixed issues with newer versions of clang refusing to accept older ::template syntax
+    - Fixed a build issue with vdb_render on Windows with newer versions of
+      glew not including glu.h by default
+    - Fixed issues with newer versions of clang refusing to accept older
+      ::template syntax
 
   NanoVDB:
     New features:
@@ -20,10 +165,12 @@ Version 12.0.1 - April 3, 2025
     - Added a UnifiedBuffer class that wraps CUDA unified memory
     - Added example for multiGPU sparse convolution
     - Added CUDA utility functions for device queries
-    - Added functions to independently stop and compute the elapsed time for timer classes
+    - Added functions to independently stop and compute the elapsed time for
+      timer classes
 
     Improvements:
-    - Replaced CUB's CachingDeviceAllocator with the default asynchronous stream ordered allocator in PointsToGrid for improved performance
+    - Replaced CUB's CachingDeviceAllocator with the default asynchronous
+      stream ordered allocator in PointsToGrid for improved performance
 
     Bug fix:
     - Map is now properly transposed when converting NanoVDB to OpenVDB.

CMakeLists.txt

@@ -42,7 +42,7 @@
 
 # note: cmake_minimum_required must be called before project commands to
 #  ensure policy scope is set up correctly
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.24)
 
 # CMP0091 allows for MSVC ABI targetting via CMAKE_MSVC_RUNTIME_LIBRARY
 # from CMake 3.15 and above. Must come before project().
@@ -53,7 +53,7 @@ endif()
 ###### Version
 
 set(OpenVDB_MAJOR_VERSION 12)
-set(OpenVDB_MINOR_VERSION 0)
+set(OpenVDB_MINOR_VERSION 1)
 set(OpenVDB_PATCH_VERSION 2)
 set(OpenVDB_VERSION "${OpenVDB_MAJOR_VERSION}.${OpenVDB_MINOR_VERSION}.${OpenVDB_PATCH_VERSION}")
 
@@ -268,6 +268,13 @@ mark_as_advanced(
 
 include(cmake/config/OpenVDBVersions.cmake)
 
+if(OPENVDB_FUTURE_DEPRECATION AND FUTURE_MINIMUM_CMAKE_VERSION)
+  if(CMAKE_VERSION VERSION_LESS ${FUTURE_MINIMUM_CMAKE_VERSION})
+    message(DEPRECATION "Support for CMake versions < ${FUTURE_MINIMUM_CMAKE_VERSION} "
+      "is deprecated and will be removed.")
+  endif()
+endif()
+
 foreach(DEPRECATED_ABI ${OPENVDB_DEPRECATED_ABI_LIST})
   option(OPENVDB_USE_DEPRECATED_ABI_${DEPRECATED_ABI} "Bypass minimum ABI requirement checks" OFF)
   mark_as_advanced(OPENVDB_USE_DEPRECATED_ABI_${DEPRECATED_ABI})
@@ -478,10 +485,7 @@ endif()
 # Locate Python and nanobind if necessary
 if(OPENVDB_BUILD_PYTHON_MODULE OR (OPENVDB_BUILD_NANOVDB AND NANOVDB_BUILD_PYTHON_MODULE))
 
-  # Call find_package(Python ...)
   find_package(Python ${MINIMUM_PYTHON_VERSION} REQUIRED COMPONENTS Development Interpreter)
-  find_package(nanobind ${MINIMUM_NANOBIND_VERSION} REQUIRED)
-
   if(OPENVDB_FUTURE_DEPRECATION AND FUTURE_MINIMUM_PYTHON_VERSION)
     if(Python_VERSION VERSION_LESS ${FUTURE_MINIMUM_PYTHON_VERSION})
       message(DEPRECATION "Support for Python versions < ${FUTURE_MINIMUM_GLFW_VERSION} "
@@ -489,6 +493,20 @@ if(OPENVDB_BUILD_PYTHON_MODULE OR (OPENVDB_BUILD_NANOVDB AND NANOVDB_BUILD_PYTHO
     endif()
   endif()
 
+  find_package(nanobind REQUIRED CONFIG)
+  include(FindPackageHandleStandardArgs)
+  find_package_handle_standard_args(nanobind
+    FOUND_VAR nanobind_FOUND
+    REQUIRED_VARS NB_DIR
+    VERSION_VAR nanobind_VERSION)
+
+  if(OPENVDB_FUTURE_DEPRECATION AND FUTURE_MINIMUM_NANOBIND_VERSION)
+    if(nanobind_VERSION VERSION_LESS ${FUTURE_MINIMUM_NANOBIND_VERSION})
+      message(DEPRECATION "Support for nanobind versions < ${FUTURE_MINIMUM_NANOBIND_VERSION} "
+        "is deprecated and will be removed.")
+    endif()
+  endif()
+
   if(NOT DEFINED VDB_PYTHON_INSTALL_DIRECTORY)
     if(DEFINED Python_SITELIB)
       get_filename_component(Python_PACKAGES_DIR ${Python_SITELIB} NAME)

CODEOWNERS

@@ -41,6 +41,3 @@ CHANGES                                                     @kmuseth @apradhana
 /openvdb_houdini/openvdb_houdini/PointUtils.*               @danrbailey @idclip
 /openvdb_houdini/openvdb_houdini/*_OpenVDB_Points_*         @danrbailey @idclip
 /openvdb_houdini/openvdb_houdini/GR_PrimVDBPoints.*         @danrbailey @idclip
-
-# fVDB
-/fvdb/                                                      @NVIDIA-Omniverse/fvdb-dev

ci/build.sh

@@ -33,8 +33,13 @@ PARMS[--target]=install
 PARMS[--build-dir]=build
 
 if [[ $RUNNER_NAME == *"8c-32g-300h"* ]]; then
-    # ASWF github actions runners have 8 threads
-    PARMS[-j]=8
+    if [[ $CXX == "g++" ]]; then
+        # GCC hits memory limits on runners, reduce threads
+        PARMS[-j]=6
+    else
+        # ASWF github actions runners have 8 threads
+        PARMS[-j]=8
+    fi
 else
     # Github actions runners have 2 threads
     # https://help.github.com/en/actions/reference/virtual-environments-for-github-hosted-runners
@@ -51,7 +56,8 @@ declare -A COMPONENTS
 COMPONENTS['core']='OPENVDB_BUILD_CORE'
 COMPONENTS['python']='OPENVDB_BUILD_PYTHON_MODULE'
 COMPONENTS['test']='OPENVDB_BUILD_UNITTESTS'
-COMPONENTS['bin']='OPENVDB_BUILD_BINARIES'
+# @todo split out vdb tool from this...
+COMPONENTS['bin']='OPENVDB_BUILD_VDB_PRINT,OPENVDB_BUILD_VDB_LOD,OPENVDB_BUILD_VDB_TOOL,OPENVDB_BUILD_VDB_TOOL_UNITTESTS'
 COMPONENTS['view']='OPENVDB_BUILD_VDB_VIEW'
 COMPONENTS['render']='OPENVDB_BUILD_VDB_RENDER'
 COMPONENTS['hou']='OPENVDB_BUILD_HOUDINI_PLUGIN'
@@ -150,7 +156,11 @@ for comp in "${!COMPONENTS[@]}"; do
             setting="ON"; break
         fi
     done
-    CMAKE_EXTRA+=("-D${COMPONENTS[$comp]}=$setting")
+    OPENVDB_TOGGLES="${COMPONENTS[$comp]}"
+    OPENVDB_TOGGLES=(${OPENVDB_TOGGLES//,/ })
+    for toggle in "${!OPENVDB_TOGGLES[@]}"; do
+        CMAKE_EXTRA+=("-D${OPENVDB_TOGGLES[$toggle]}=$setting")
+    done
 done
 
 ################################################
@@ -182,17 +192,14 @@ cd ${BUILD_DIR}
 set -x
 
 # Note:
-# - print and lod binary options are always on and can be toggles with: OPENVDB_BUILD_BINARIES=ON/OFF
+# - OPENVDB_BUILD_BINARIES is always ON, but each binary will be toggled depending on the provided comps
 # - always enabled the python tests with OPENVDB_BUILD_PYTHON_UNITTESTS if the python module is in use,
 #   regardless of the 'test' component being enabled or not (see the OPENVDB_BUILD_PYTHON_UNITTESTS option).
 cmake \
     -DOPENVDB_USE_DEPRECATED_ABI_10=ON \
     -DOPENVDB_USE_DEPRECATED_ABI_11=ON \
-    -DOPENVDB_BUILD_VDB_PRINT=ON \
-    -DOPENVDB_BUILD_VDB_LOD=ON \
-    -DOPENVDB_BUILD_VDB_TOOL=ON \
-    -DOPENVDB_BUILD_VDB_TOOL_UNITTESTS=ON \
     -DOPENVDB_TOOL_USE_NANO=OFF \
+    -DOPENVDB_BUILD_BINARIES=ON \
     -DOPENVDB_BUILD_PYTHON_UNITTESTS=ON \
     -DMSVC_MP_THREAD_COUNT=${PARMS[-j]} \
     "${CMAKE_EXTRA[@]}" \

ci/buildspec.yml

@@ -1,84 +0,0 @@
-version: 0.2
-
-env:
-  variables:
-    PYTHONPATH: ""
-  # secrets-manager:
-  #   GITHUB_TOKEN: "github-token:token"
-
-phases:
-  install:
-    runtime-versions:
-      python: 3.10
-    commands:
-      # Install Conda
-      - wget https://github.com/conda-forge/miniforge/releases/latest/download/Miniforge3-Linux-x86_64.sh
-      - bash Miniforge3-Linux-x86_64.sh -b -p $HOME/miniforge3
-      - eval "$($HOME/miniforge3/bin/conda shell.bash hook)"
-      - conda init
-      - source ~/.bashrc || true
-
-      # Create build environment
-      - conda env create -f fvdb/env/build_environment.yml -n fvdb_build
-      - echo "Build environment created successfully"
-
-      # Create test environment
-      - conda env create -f fvdb/env/test_environment.yml -n fvdb_test
-      - echo "Test environment created successfully"
-
-  pre_build:
-    commands:
-      - echo "Starting pre_build phase"
-      - git config --global --add safe.directory "$(pwd)"
-
-      # Verify environments exist
-      - conda env list
-      - echo "Pre-build phase completed"
-
-  build:
-    commands:
-      - echo "Starting build phase"
-
-      # Build fvdb wheel using conda run (this ensures proper environment activation)
-      - cd fvdb
-      - export TORCH_CUDA_ARCH_LIST="7.0;7.5;8.0;8.6+PTX"
-      - echo "Building wheel with conda run..."
-      - conda run --no-capture-output -n fvdb_build ./build.sh wheel verbose gtests benchmarks
-
-      # Verify wheel was created
-      - ls -la dist/
-      - echo "Wheel build completed"
-
-      # Move back to root directory
-      - cd ..
-
-      # Install package in test environment using conda run
-      - echo "Installing wheel in test environment..."
-      - conda run --no-capture-output -n fvdb_test pip install ./fvdb/dist/*.whl
-      - echo "Package installation completed"
-
-  post_build:
-    commands:
-      - echo "Starting post_build phase"
-
-      # Run unit tests using conda run
-      - echo "Running unit tests..."
-      - cd fvdb/tests
-      - conda run --no-capture-output -n fvdb_test pytest -v unit
-
-      # Run documentation tests using conda run
-      - echo "Running documentation tests..."
-      - cd ..
-      - conda run --no-capture-output -n fvdb_test pytest --markdown-docs docs
-
-      - echo "All tests completed successfully"
-
-artifacts:
-  files:
-    - fvdb/dist/*.whl
-  name: fvdb-artifacts
-
-cache:
-  paths:
-    - '/root/.cache/pip/**/*'
-    - '$HOME/miniforge3/**/*'

ci/download_houdini.sh

@@ -8,8 +8,14 @@ HOUDINI_MAJOR="$1"
 PLATFORM="$2"
 OTHER_ARGS="$3"
 
-pip install --user requests
-python ci/download_houdini.py $HOUDINI_MAJOR $PLATFORM $OTHER_ARGS
+if [[ $PLATFORM =~ "linux" ]]; then
+    pip3 install --user requests
+elif [[ $PLATFORM =~ "macos" ]]; then
+    # Tell the homebrew install of pip3 that we don't care about installing directly through pip3
+    pip3 install --user requests --break-system-packages
+fi
+
+python3 ci/download_houdini.py $HOUDINI_MAJOR $PLATFORM $OTHER_ARGS
 
 if [[ $PLATFORM =~ "linux" ]]; then
     # create dir hierarchy
@@ -31,20 +37,20 @@ if [[ $PLATFORM =~ "linux" ]]; then
     ls -al dsolib/
 
     # copy required libraries
-    cp -r toolkit/cmake ../hou/toolkit/.
-    cp -r toolkit/include ../hou/toolkit/.
-    cp -r dsolib/libHoudini* ../hou/dsolib/.
-    cp -r dsolib/libopenvdb_sesi* ../hou/dsolib/.
-    cp -r dsolib/libblosc* ../hou/dsolib/.
-    cp -r dsolib/libhboost* ../hou/dsolib/.
-    cp -r dsolib/libz* ../hou/dsolib/.
-    cp -r dsolib/libbz2* ../hou/dsolib/.
-    cp -r dsolib/libtbb* ../hou/dsolib/.
-    cp -r dsolib/libjemalloc* ../hou/dsolib/.
-    cp -r dsolib/liblzma* ../hou/dsolib/.
-    cp -r dsolib/libIex* ../hou/dsolib/.
-    cp -r dsolib/libImath* ../hou/dsolib/.
-    cp -r dsolib/libIlmThread* ../hou/dsolib/.
+    mv toolkit/cmake ../hou/toolkit/.
+    mv toolkit/include ../hou/toolkit/.
+    mv dsolib/libHoudini* ../hou/dsolib/.
+    mv dsolib/libopenvdb_sesi* ../hou/dsolib/.
+    mv dsolib/libblosc* ../hou/dsolib/.
+    mv dsolib/libhboost* ../hou/dsolib/.
+    mv dsolib/libz* ../hou/dsolib/.
+    mv dsolib/libbz2* ../hou/dsolib/.
+    mv dsolib/libtbb* ../hou/dsolib/.
+    mv dsolib/libjemalloc* ../hou/dsolib/.
+    mv dsolib/liblzma* ../hou/dsolib/.
+    mv dsolib/libIex* ../hou/dsolib/.
+    mv dsolib/libImath* ../hou/dsolib/.
+    mv dsolib/libIlmThread* ../hou/dsolib/.
     cd ..
 
 elif [[ $PLATFORM =~ "macos" ]]; then

ci/install_doxygen.sh

@@ -15,6 +15,6 @@ fi
 
 mkdir build
 cd build
-cmake ../.
+cmake -DCMAKE_POLICY_VERSION_MINIMUM=3.5 ../.
 make -j8
 make install

ci/install_exr.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+# Copyright Contributors to the OpenVDB Project
+# SPDX-License-Identifier: Apache-2.0
+
+set -ex
+EXR_VERSION="$1"
+
+git clone https://github.com/AcademySoftwareFoundation/openexr.git
+cd openexr
+
+if [ "$EXR_VERSION" != "latest" ]; then
+    git checkout tags/${EXR_VERSION} -b ${EXR_VERSION}
+fi
+
+mkdir build
+cd build
+
+cmake ..
+
+make -j$(nproc)
+sudo make install

ci/install_gtest.sh

@@ -3,16 +3,19 @@
 # SPDX-License-Identifier: Apache-2.0
 
 set -ex
-
 GTEST_VERSION="$1"
 
-
-git clone https://github.com/google/googletest.git -b v${GTEST_VERSION}
+git clone https://github.com/google/googletest.git
 cd googletest
+
+if [ "$GTEST_VERSION" != "latest" ]; then
+    git checkout tags/${GTEST_VERSION} -b ${GTEST_VERSION}
+fi
+
 mkdir build
 cd build
+
 cmake ..
 
 make -j$(nproc)
-
 sudo make install

ci/install_imath.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+# Copyright Contributors to the OpenVDB Project
+# SPDX-License-Identifier: Apache-2.0
+
+set -ex
+IMATH_VERSION="$1"
+
+git clone https://github.com/AcademySoftwareFoundation/Imath.git
+cd Imath
+
+if [ "$IMATH_VERSION" != "latest" ]; then
+    git checkout tags/${IMATH_VERSION} -b ${IMATH_VERSION}
+fi
+
+mkdir build
+cd build
+
+cmake ..
+
+make -j$(nproc)
+sudo make install

ci/install_llvm_windows.sh

@@ -4,26 +4,55 @@
 
 set -ex
 
-LLVM_CRT="$1"
+LLVM_VER="$1"
+LLVM_CRT="$2"
 
-git clone -b llvmorg-14.0.0 --depth 1 https://github.com/llvm/llvm-project.git llvm
+# Legacy define for older versions of LLVM
+LLVM_LEGACY_CRT_DEFINE=""
+if [[ "${LLVM_CRT}" == "MultiThreaded" ]]; then
+    LLVM_LEGACY_CRT_DEFINE="MT"
+elif [[ "${LLVM_CRT}" == "MultiThreadedDebug" ]]; then
+    LLVM_LEGACY_CRT_DEFINE="MTd"
+elif [[ "${LLVM_CRT}" == "MultiThreadedDLL" ]]; then
+    LLVM_LEGACY_CRT_DEFINE="MD"
+elif [[ "${LLVM_CRT}" == "MultiThreadedDebugDLL" ]]; then
+    LLVM_LEGACY_CRT_DEFINE="MDd"
+fi
+
+git clone -b llvmorg-${LLVM_VER} --depth 1 https://github.com/llvm/llvm-project.git llvm
 cd llvm
 
 mkdir .build
 cd .build
 
-# @note  currently only test static builds with MT
 cmake -B . -S ../llvm -A x64 -G "Visual Studio 17 2022" -Thost=x64 \
     -DCMAKE_INSTALL_PREFIX="${HOME}/llvm_install" \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DLLVM_ENABLE_ASSERTIONS=OFF \
+    -DLLVM_ENABLE_PROJECTS="" \
+    -DLLVM_ENABLE_RUNTIMES="" \
+    -DLLVM_ENABLE_UNWIND_TABLES=OFF \
     -DLLVM_TARGETS_TO_BUILD="host" \
-    -DLLVM_BUILD_TOOLS=OFF \
     -DLLVM_INCLUDE_BENCHMARKS=OFF \
     -DLLVM_INCLUDE_EXAMPLES=OFF \
     -DLLVM_INCLUDE_TESTS=OFF \
+    -DLLVM_INCLUDE_DOCS=OFF \
     -DLLVM_INCLUDE_TOOLS=OFF \
-    -DLLVM_USE_CRT_RELEASE=${LLVM_CRT}
+    -DLLVM_INCLUDE_UTILS=OFF \
+    -DLLVM_BUILD_BENCHMARKS=OFF \
+    -DLLVM_BUILD_EXAMPLES=OFF \
+    -DLLVM_BUILD_TESTS=OFF \
+    -DLLVM_BUILD_DOCS=OFF \
+    -DLLVM_BUILD_TOOLS=OFF \
+    -DLLVM_BUILD_UTILS=OFF \
+    -DLLVM_ENABLE_BINDINGS=OFF \
+    -DLLVM_ENABLE_OCAMLDOC=OFF \
+    -DLLVM_PARALLEL_COMPILE_JOBS=4 \
+    -DLLVM_PARALLEL_LINK_JOBS=4 \
+    -DCMAKE_MSVC_RUNTIME_LIBRARY=${LLVM_CRT} \
+    -DLLVM_USE_CRT_RELEASE=${LLVM_LEGACY_CRT_DEFINE}
 
-cmake --build . --config Release --target install
+cmake --build . --parallel 4 --config Release --target install
 
 cd ..
 

ci/install_macos.sh

@@ -22,6 +22,7 @@ brew install jq # for trivial parsing of brew json
 brew install openexr
 brew install nanobind # also installs the dependent python version
 brew install robin-map # required for nanobind
+brew install numpy # only for python tests
 brew install zlib
 brew install jemalloc
 
@@ -45,9 +46,7 @@ LLVM_VERSION=$1
 if [ ! -z "$LLVM_VERSION" ]; then
     if [ "$LLVM_VERSION" == "latest" ]; then
         brew install llvm
-        brew install cppunit
     else
         brew install llvm@$LLVM_VERSION
-        brew install cppunit
     fi
 fi

ci/install_texlive.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+# Copyright Contributors to the OpenVDB Project
+# SPDX-License-Identifier: Apache-2.0
+
+set -ex
+
+# Download the TeX Live installer
+wget https://mirror.ctan.org/systems/texlive/tlnet/install-tl-unx.tar.gz
+
+# Extract
+tar xzf install-tl-unx.tar.gz
+rm install-tl-unx.tar.gz
+cd install-tl-*
+
+# Run the installer with no docs or source installation
+./install-tl --no-interaction --no-doc-install --no-src-install --scheme=minimal
+
+# Export the texlive PATH to GITHUB_PATH
+TEXLIVE_PATH=/usr/local/texlive/2025/bin/x86_64-linux
+export PATH=${TEXLIVE_PATH}:${PATH}
+echo "${TEXLIVE_PATH}" >> $GITHUB_PATH
+
+# Install the required packages
+tlmgr install latex-bin dvips collection-fontsrecommended collection-latexrecommended
+
+# Validate that installing dvips and latex has been successful
+dvips --version
+latex --version

ci/test_install.sh

@@ -10,7 +10,7 @@ set -e
 # the expected VDB installation
 
 cmakelists="
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.24)
 project(TestInstall LANGUAGES CXX)
 find_package(OpenVDB REQUIRED COMPONENTS openvdb)
 add_executable(test_vdb_print \"../openvdb_cmd/vdb_print/main.cc\")

cmake/FindBlosc.cmake

@@ -88,7 +88,7 @@ may be provided to tell this module where to look.
 
 #]=======================================================================]
 
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.24)
 include(GNUInstallDirs)
 
 mark_as_advanced(

cmake/FindCppUnit.cmake

@@ -1,320 +0,0 @@
-# Copyright Contributors to the OpenVDB Project
-# SPDX-License-Identifier: Apache-2.0
-#
-#[=======================================================================[.rst:
-
-FindCppUnit
------------
-
-Find CppUnit include dirs and libraries
-
-Use this module by invoking find_package with the form::
-
-  find_package(CppUnit
-    [version] [EXACT]      # Minimum or EXACT version
-    [REQUIRED]             # Fail with error if CppUnit is not found
-    )
-
-
-IMPORTED Targets
-^^^^^^^^^^^^^^^^
-
-``CppUnit::cppunit``
-  This module defines IMPORTED target CppUnit::cppunit, if CppUnit has been
-  found.
-
-Result Variables
-^^^^^^^^^^^^^^^^
-
-This will define the following variables:
-
-``CppUnit_FOUND``
-  True if the system has the CppUnit library.
-``CppUnit_VERSION``
-  The version of the CppUnit library which was found.
-``CppUnit_INCLUDE_DIRS``
-  Include directories needed to use CppUnit.
-``CppUnit_RELEASE_LIBRARIES``
-  Libraries needed to link to the release version of CppUnit.
-``CppUnit_RELEASE_LIBRARY_DIRS``
-  CppUnit release library directories.
-``CppUnit_DEBUG_LIBRARIES``
-  Libraries needed to link to the debug version of CppUnit.
-``CppUnit_DEBUG_LIBRARY_DIRS``
-  CppUnit debug library directories.
-
-Deprecated - use [RELEASE|DEBUG] variants:
-
-``CppUnit_LIBRARIES``
-  Libraries needed to link to CppUnit.
-``CppUnit_LIBRARY_DIRS``
-  CppUnit library directories.
-
-Cache Variables
-^^^^^^^^^^^^^^^
-
-The following cache variables may also be set:
-
-``CppUnit_INCLUDE_DIR``
-  The directory containing ``cppunit/Portability.h``.
-``CppUnit_LIBRARY``
-  The path to the CppUnit library.
-
-Hints
-^^^^^
-
-Instead of explicitly setting the cache variables, the following variables
-may be provided to tell this module where to look.
-
-``CppUnit_ROOT``
-  Preferred installation prefix.
-``CPPUNIT_INCLUDEDIR``
-  Preferred include directory e.g. <prefix>/include
-``CPPUNIT_LIBRARYDIR``
-  Preferred library directory e.g. <prefix>/lib
-``CPPUNIT_DEBUG_SUFFIX``
-  Suffix of the debug version of CppUnit libs. Defaults to "_d".
-``SYSTEM_LIBRARY_PATHS``
-  Global list of library paths intended to be searched by and find_xxx call
-``CPPUNIT_USE_STATIC_LIBS``
-  Only search for static cppunit libraries
-``DISABLE_CMAKE_SEARCH_PATHS``
-  Disable CMakes default search paths for find_xxx calls in this module
-
-#]=======================================================================]
-
-cmake_minimum_required(VERSION 3.20)
-include(GNUInstallDirs)
-
-
-mark_as_advanced(
-  CppUnit_INCLUDE_DIR
-  CppUnit_LIBRARY
-)
-
-set(_FIND_CPPUNIT_ADDITIONAL_OPTIONS "")
-if(DISABLE_CMAKE_SEARCH_PATHS)
-  set(_FIND_CPPUNIT_ADDITIONAL_OPTIONS NO_DEFAULT_PATH)
-endif()
-
-# Set _CPPUNIT_ROOT based on a user provided root var. Xxx_ROOT and ENV{Xxx_ROOT}
-# are prioritised over the legacy capitalized XXX_ROOT variables for matching
-# CMake 3.12 behaviour
-# @todo  deprecate -D and ENV CPPUNIT_ROOT from CMake 3.12
-if(CppUnit_ROOT)
-  set(_CPPUNIT_ROOT ${CppUnit_ROOT})
-elseif(DEFINED ENV{CppUnit_ROOT})
-  set(_CPPUNIT_ROOT $ENV{CppUnit_ROOT})
-elseif(CPPUNIT_ROOT)
-  set(_CPPUNIT_ROOT ${CPPUNIT_ROOT})
-elseif(DEFINED ENV{CPPUNIT_ROOT})
-  set(_CPPUNIT_ROOT $ENV{CPPUNIT_ROOT})
-endif()
-
-# Additionally try and use pkconfig to find cppunit
-if(USE_PKGCONFIG)
-  if(NOT DEFINED PKG_CONFIG_FOUND)
-    find_package(PkgConfig)
-  endif()
-  pkg_check_modules(PC_CppUnit QUIET cppunit)
-endif()
-
-# ------------------------------------------------------------------------
-#  Search for CppUnit include DIR
-# ------------------------------------------------------------------------
-
-set(_CPPUNIT_INCLUDE_SEARCH_DIRS "")
-list(APPEND _CPPUNIT_INCLUDE_SEARCH_DIRS
-  ${CPPUNIT_INCLUDEDIR}
-  ${_CPPUNIT_ROOT}
-  ${PC_CppUnit_INCLUDEDIR}
-  ${SYSTEM_LIBRARY_PATHS}
-)
-
-# Look for a standard cppunit header file.
-find_path(CppUnit_INCLUDE_DIR cppunit/Portability.h
-  ${_FIND_CPPUNIT_ADDITIONAL_OPTIONS}
-  PATHS ${_CPPUNIT_INCLUDE_SEARCH_DIRS}
-  PATH_SUFFIXES ${CMAKE_INSTALL_INCLUDEDIR} include
-)
-
-if(EXISTS "${CppUnit_INCLUDE_DIR}/cppunit/Portability.h")
-  file(STRINGS "${CppUnit_INCLUDE_DIR}/cppunit/Portability.h"
-    _cppunit_version_string REGEX "#define CPPUNIT_VERSION "
-  )
-  string(REGEX REPLACE "#define CPPUNIT_VERSION +\"(.+)\".*$" "\\1"
-    _cppunit_version_string "${_cppunit_version_string}"
-  )
-  string(STRIP "${_cppunit_version_string}" CppUnit_VERSION)
-  unset(_cppunit_version_string )
-endif()
-
-# ------------------------------------------------------------------------
-#  Search for CppUnit lib DIR
-# ------------------------------------------------------------------------
-
-if(NOT DEFINED CPPUNIT_DEBUG_SUFFIX)
-  set(CPPUNIT_DEBUG_SUFFIX "d")
-endif()
-
-set(_CPPUNIT_LIBRARYDIR_SEARCH_DIRS "")
-list(APPEND _CPPUNIT_LIBRARYDIR_SEARCH_DIRS
-  ${CPPUNIT_LIBRARYDIR}
-  ${_CPPUNIT_ROOT}
-  ${PC_CppUnit_LIBDIR}
-  ${SYSTEM_LIBRARY_PATHS}
-)
-
-# Library suffix handling
-
-set(_CPPUNIT_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES})
-
-if(MSVC)
-  if(CPPUNIT_USE_STATIC_LIBS)
-    set(CMAKE_FIND_LIBRARY_SUFFIXES ".lib")
-  else()
-    list(APPEND CMAKE_FIND_LIBRARY_SUFFIXES "_dll.lib")
-  endif()
-else()
-  if(CPPUNIT_USE_STATIC_LIBS)
-    set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
-  endif()
-endif()
-
-list(APPEND CPPUNIT_BUILD_TYPES RELEASE DEBUG)
-
-foreach(BUILD_TYPE ${CPPUNIT_BUILD_TYPES})
-  set(_CPPUNIT_LIB_NAME cppunit)
-  if(BUILD_TYPE STREQUAL DEBUG)
-    set(_CPPUNIT_LIB_NAME "${_CPPUNIT_LIB_NAME}${CPPUNIT_DEBUG_SUFFIX}")
-  endif()
-
-  # Find the lib
-  find_library(CppUnit_LIBRARY_${BUILD_TYPE} ${_CPPUNIT_LIB_NAME}
-    ${_FIND_CPPUNIT_ADDITIONAL_OPTIONS}
-    PATHS ${_CPPUNIT_LIBRARYDIR_SEARCH_DIRS}
-    PATH_SUFFIXES ${CMAKE_INSTALL_LIBDIR} lib64 lib
-  )
-endforeach()
-
-# Reset library suffix
-
-set(CMAKE_FIND_LIBRARY_SUFFIXES ${_CPPUNIT_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES})
-unset(_CPPUNIT_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES)
-
-if(CppUnit_LIBRARY_DEBUG AND CppUnit_LIBRARY_RELEASE)
-  # if the generator is multi-config or if CMAKE_BUILD_TYPE is set for
-  # single-config generators, set optimized and debug libraries
-  get_property(_isMultiConfig GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
-  if(_isMultiConfig OR CMAKE_BUILD_TYPE)
-    set(CppUnit_LIBRARY optimized ${CppUnit_LIBRARY_RELEASE} debug ${CppUnit_LIBRARY_DEBUG})
-  else()
-    # For single-config generators where CMAKE_BUILD_TYPE has no value,
-    # just use the release libraries
-    set(CppUnit_LIBRARY ${CppUnit_LIBRARY_RELEASE})
-  endif()
-  # FIXME: This probably should be set for both cases
-  set(CppUnit_LIBRARIES optimized ${CppUnit_LIBRARY_RELEASE} debug ${CppUnit_LIBRARY_DEBUG})
-endif()
-
-# if only the release version was found, set the debug variable also to the release version
-if(CppUnit_LIBRARY_RELEASE AND NOT CppUnit_LIBRARY_DEBUG)
-  set(CppUnit_LIBRARY_DEBUG ${CppUnit_LIBRARY_RELEASE})
-  set(CppUnit_LIBRARY       ${CppUnit_LIBRARY_RELEASE})
-  set(CppUnit_LIBRARIES     ${CppUnit_LIBRARY_RELEASE})
-endif()
-
-# if only the debug version was found, set the release variable also to the debug version
-if(CppUnit_LIBRARY_DEBUG AND NOT CppUnit_LIBRARY_RELEASE)
-  set(CppUnit_LIBRARY_RELEASE ${CppUnit_LIBRARY_DEBUG})
-  set(CppUnit_LIBRARY         ${CppUnit_LIBRARY_DEBUG})
-  set(CppUnit_LIBRARIES       ${CppUnit_LIBRARY_DEBUG})
-endif()
-
-# If the debug & release library ends up being the same, omit the keywords
-if("${CppUnit_LIBRARY_RELEASE}" STREQUAL "${CppUnit_LIBRARY_DEBUG}")
-  set(CppUnit_LIBRARY   ${CppUnit_LIBRARY_RELEASE} )
-  set(CppUnit_LIBRARIES ${CppUnit_LIBRARY_RELEASE} )
-endif()
-
-if(CppUnit_LIBRARY)
-  set(CppUnit_FOUND TRUE)
-else()
-  set(CppUnit_FOUND FALSE)
-endif()
-
-# ------------------------------------------------------------------------
-#  Cache and set CppUnit_FOUND
-# ------------------------------------------------------------------------
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(CppUnit
-  FOUND_VAR CppUnit_FOUND
-  REQUIRED_VARS
-    CppUnit_LIBRARY
-    CppUnit_INCLUDE_DIR
-  VERSION_VAR CppUnit_VERSION
-)
-
-if(NOT CppUnit_FOUND)
-  if(CppUnit_FIND_REQUIRED)
-    message(FATAL_ERROR "Unable to find CppUnit")
-  endif()
-  return()
-endif()
-
-# Partition release/debug lib vars
-
-set(CppUnit_RELEASE_LIBRARIES ${CppUnit_LIBRARY_RELEASE})
-get_filename_component(CppUnit_RELEASE_LIBRARY_DIRS ${CppUnit_RELEASE_LIBRARIES} DIRECTORY)
-set(CppUnit_DEBUG_LIBRARIES ${CppUnit_LIBRARY_DEBUG})
-get_filename_component(CppUnit_DEBUG_LIBRARY_DIRS ${CppUnit_DEBUG_LIBRARIES} DIRECTORY)
-set(CppUnit_LIBRARIES ${CppUnit_RELEASE_LIBRARIES})
-set(CppUnit_LIBRARY_DIRS ${CppUnit_RELEASE_LIBRARY_DIRS})
-set(CppUnit_INCLUDE_DIRS ${CppUnit_INCLUDE_DIR})
-
-# Configure lib type. If XXX_USE_STATIC_LIBS, we always assume a static
-# lib is in use. If win32, we can't mark the import .libs as shared, so
-# these are always marked as UNKNOWN. Otherwise, infer from extension.
-set(CPPUNIT_LIB_TYPE UNKNOWN)
-if(CPPUNIT_USE_STATIC_LIBS)
-  set(CPPUNIT_LIB_TYPE STATIC)
-elseif(UNIX)
-  get_filename_component(_CPPUNIT_EXT ${CppUnit_LIBRARY_RELEASE} EXT)
-  if(_CPPUNIT_EXT STREQUAL ".a")
-    set(CPPUNIT_LIB_TYPE STATIC)
-  elseif(_CPPUNIT_EXT STREQUAL ".so" OR
-         _CPPUNIT_EXT STREQUAL ".dylib")
-    set(CPPUNIT_LIB_TYPE SHARED)
-  endif()
-endif()
-
-if(NOT TARGET CppUnit::cppunit)
-  add_library(CppUnit::cppunit ${CPPUNIT_LIB_TYPE} IMPORTED)
-  set_target_properties(CppUnit::cppunit PROPERTIES
-    INTERFACE_COMPILE_OPTIONS "${PC_CppUnit_CFLAGS_OTHER}"
-    INTERFACE_INCLUDE_DIRECTORIES "${CppUnit_INCLUDE_DIRS}")
-
-  # Standard location
-  set_target_properties(CppUnit::cppunit PROPERTIES
-    IMPORTED_LINK_INTERFACE_LANGUAGES "CXX"
-    IMPORTED_LOCATION "${CppUnit_LIBRARY}")
-
-  # Release location
-  if(EXISTS "${CppUnit_LIBRARY_RELEASE}")
-    set_property(TARGET CppUnit::cppunit APPEND PROPERTY
-      IMPORTED_CONFIGURATIONS RELEASE)
-    set_target_properties(CppUnit::cppunit PROPERTIES
-      IMPORTED_LINK_INTERFACE_LANGUAGES_RELEASE "CXX"
-      IMPORTED_LOCATION_RELEASE "${CppUnit_LIBRARY_RELEASE}")
-  endif()
-
-  # Debug location
-  if(EXISTS "${CppUnit_LIBRARY_DEBUG}")
-    set_property(TARGET CppUnit::cppunit APPEND PROPERTY
-      IMPORTED_CONFIGURATIONS DEBUG)
-    set_target_properties(CppUnit::cppunit PROPERTIES
-      IMPORTED_LINK_INTERFACE_LANGUAGES_DEBUG "CXX"
-      IMPORTED_LOCATION_DEBUG "${CppUnit_LIBRARY_DEBUG}")
-  endif()
-endif()

cmake/FindJemalloc.cmake

@@ -64,7 +64,7 @@ may be provided to tell this module where to look.
 
 #]=======================================================================]
 
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.24)
 include(GNUInstallDirs)
 
 

cmake/FindLog4cplus.cmake

@@ -87,7 +87,7 @@ may be provided to tell this module where to look.
 
 #]=======================================================================]
 
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.24)
 include(GNUInstallDirs)
 
 

cmake/FindOpenEXR.cmake

@@ -93,7 +93,7 @@ may be provided to tell this module where to look.
 
 #]=======================================================================]
 
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.24)
 include(GNUInstallDirs)
 
 

cmake/FindOpenVDB.cmake

@@ -109,7 +109,7 @@ may be provided to tell this module where to look.
 
 #]=======================================================================]
 
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.24)
 include(GNUInstallDirs)
 
 

cmake/FindTBB.cmake

@@ -93,7 +93,7 @@ may be provided to tell this module where to look.
 
 #]=======================================================================]
 
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.24)
 include(GNUInstallDirs)
 
 

cmake/OpenVDBGLFW3Setup.cmake

@@ -47,7 +47,7 @@ The following variables may be provided to tell this module where to look.
 # Find the glfw3 installation and use glfw's CMake to initialize
 # the glfw lib
 
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.24)
 
 set(_FIND_GLFW3_ADDITIONAL_OPTIONS "")
 if(DISABLE_CMAKE_SEARCH_PATHS)

cmake/OpenVDBHoudiniSetup.cmake

@@ -73,7 +73,7 @@ may be provided to tell this module where to look.
 # Find the Houdini installation and use Houdini's CMake to initialize
 # the Houdini lib
 
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.24)
 
 # Include utility functions for version information
 include(${CMAKE_CURRENT_LIST_DIR}/OpenVDBUtils.cmake)

cmake/OpenVDBMayaSetup.cmake

@@ -51,7 +51,7 @@ variables may be provided to tell this module where to look.
 # Find the Maya installation and use Maya's CMake to initialize
 # the Maya lib
 
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.24)
 
 
 set(_FIND_MAYA_ADDITIONAL_OPTIONS "")

cmake/OpenVDBUtils.cmake

@@ -57,7 +57,7 @@ The following functions are provided:
 
 #]=======================================================================]
 
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.24)
 
 
 function(OPENVDB_GET_VERSION_DEFINE HEADER KEY VALUE)

cmake/Uninstall.cmake

@@ -16,7 +16,7 @@ existing from a previous run of cmake.
 
 #]=======================================================================]
 
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.24)
 
 set(MANIFEST "${CMAKE_CURRENT_BINARY_DIR}/install_manifest.txt")
 

cmake/config/OpenVDBCXX.cmake

@@ -7,7 +7,7 @@
 
 #]=======================================================================]
 
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.24)
 
 ###############################################################################
 

cmake/config/OpenVDBVersions.cmake

@@ -8,7 +8,7 @@
 
 #]=======================================================================]
 
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.24)
 
 ###############################################################################
 
@@ -27,7 +27,9 @@ set(OPENVDB_DEPRECATED_ABI_LIST ${MINIMUM_OPENVDB_ABI_VERSION} ${_PREV_ABI})
 unset(_PREV_ABI)
 
 if(NOT DISABLE_DEPENDENCY_VERSION_CHECKS)
-  # @note  Currently tracking CY2022 of the VFX platform where available
+  # @note  Currently tracking CY2024 of the VFX platform where available
+  # (that is, our minimum requirements are for the current VFX platform)
+  # minus 2 years to be able to build with legacy ABI)
 
   # @Note  Compiler versions are not really a hard and fast rule, you just need
   # a compiler with complete support for our MINIMUM_CXX_STANDARD (currently 17).
@@ -39,32 +41,27 @@ if(NOT DISABLE_DEPENDENCY_VERSION_CHECKS)
   set(MINIMUM_ICC_VERSION 19)
   set(MINIMUM_MSVC_VERSION 19.30) # 1928 (Visual Studio 2019 Version 16.8 + 16.9)
 
-  set(MINIMUM_BOOST_VERSION 1.80)
-  # Nanobind does not store the version in the CMake config file in 2.0.0.
-  # This issue was fixed in 2.1.0 so next time we bump the minimum version,
-  # we can define this.
-  #set(MINIMUM_NANOBIND_VERSION 2.0.0)
-  set(MINIMUM_IMATH_VERSION 3.1)
-  set(MINIMUM_OPENEXR_VERSION 3.1)
+  set(MINIMUM_BOOST_VERSION 1.82)
+  set(MINIMUM_OPENEXR_VERSION 3.2)
+  set(MINIMUM_IMATH_VERSION 3.2)
   set(MINIMUM_ZLIB_VERSION 1.2.7)
   set(MINIMUM_TBB_VERSION 2020.3)
-  set(MINIMUM_LLVM_VERSION 13.0.0)
+  set(MINIMUM_LLVM_VERSION 15.0.0)
   set(MINIMUM_BLOSC_VERSION 1.17.0)
-  set(MINIMUM_GLFW_VERSION 3.1)
+  set(MINIMUM_GLFW_VERSION 3.3)
 
-  set(MINIMUM_PYTHON_VERSION 3.10)
-  set(MINIMUM_NUMPY_VERSION 1.23.0)
+  set(MINIMUM_PYTHON_VERSION 3.11)
 
   set(MINIMUM_GOOGLETEST_VERSION 1.10)
-  set(MINIMUM_LOG4CPLUS_VERSION 1.1.2)
-  set(MINIMUM_HOUDINI_VERSION 19.5)
+  set(MINIMUM_LOG4CPLUS_VERSION 2.0)
+  set(MINIMUM_HOUDINI_VERSION 20.5)
 
   # These always promote warnings rather than errors
   set(MINIMUM_MAYA_VERSION 2017)
   set(MINIMUM_DOXYGEN_VERSION 1.8.8)
 endif()
 
-# VFX 23 deprecations to transition to MINIMUM_* variables in OpenVDB 12.0.0
+# VFX 24 deprecations to transition to MINIMUM_* variables in OpenVDB 14.0.0
 # @note  At the time of writing, any variables that are commented out don't
 #   have target transitional versions.
 
@@ -73,16 +70,16 @@ endif()
 # set(FUTURE_MINIMUM_ICC_VERSION 19)
 
 # set(FUTURE_MINIMUM_CXX_STANDARD 20)
-set(FUTURE_MINIMUM_CMAKE_VERSION 3.24)
-set(FUTURE_MINIMUM_OPENEXR_VERSION 3.2)
-set(FUTURE_MINIMUM_BOOST_VERSION 1.82)
-set(FUTURE_MINIMUM_GLFW_VERSION 3.3)
-set(FUTURE_MINIMUM_LOG4CPLUS_VERSION 2.0)
-# set(FUTURE_MINIMUM_NANOBIND_VERSION 2.1.0)
+set(FUTURE_MINIMUM_CMAKE_VERSION 4.0)
+set(FUTURE_MINIMUM_OPENEXR_VERSION 3.3)
+set(FUTURE_MINIMUM_IMATH_VERSION 3.3)
+set(FUTURE_MINIMUM_TBB_VERSION 2021)
+set(FUTURE_MINIMUM_BOOST_VERSION 1.85)
+#set(FUTURE_MINIMUM_GLFW_VERSION 3.3)
+#set(FUTURE_MINIMUM_LOG4CPLUS_VERSION 2.0)
+set(FUTURE_MINIMUM_NANOBIND_VERSION 2.5.0)
 
 # set(FUTURE_MINIMUM_BLOSC_VERSION 1.17.0)
-# set(FUTURE_MINIMUM_TBB_VERSION 2020.3)
-set(FUTURE_MINIMUM_PYTHON_VERSION 3.11)
-set(FUTURE_MINIMUM_NUMPY_VERSION 1.26.0)
+# set(FUTURE_MINIMUM_PYTHON_VERSION 3.11)
 # set(FUTURE_MINIMUM_HOUDINI_VERSION 20.0)
-set(FUTURE_MINIMUM_LLVM_VERSION 15.0.0)
+set(FUTURE_MINIMUM_LLVM_VERSION 18.0.0)

doc/CMakeLists.txt

@@ -7,7 +7,7 @@
 
 #]=======================================================================]
 
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.24)
 project(OpenVDBDocs LANGUAGES NONE)
 
 include(GNUInstallDirs)

doc/build.txt

@@ -238,8 +238,8 @@ it's a good idea to read the above section on
 
 DCC      | Supported Version | OpenVDB ABI |
 -------- | ----------------- | ----------- |
-Houdini  | 20.0              | 10          |
 Houdini  | 20.5              | 11          |
+Houdini  | 21.0              | 12          |
 
 @subsection buildBuildHou Building Against Houdini
 
@@ -257,12 +257,10 @@ CMake          | Cross-platform family of tools designed to help build software
 C++17 Compiler | Matching Houdini compiler and version                           | All                |
 Boost          | Components: iostreams                                           | All                |
 GoogleTest     | A unit testing framework module for C++                         | Unit Tests         |
-CppUnit        | A unit testing framework module for C++                         | Unit Tests (AX)    |
 GLFW           | Simple API for OpenGL development                               | OpenVDB View       |
 Doxygen        | Documentation generation from C++                               | Documentation      |
 Log4cplus      | An optional dependency for improved OpenVDB Logging             | Optional (All)     |
 nanobind       | C++/python bindings                                             | Optional (Python)  |
-NumPy          | Scientific computing with Python                                | Optional (Python)  |
 LLVM           | Target-independent code generation                              | OpenVDB AX         |
 
 At a minimum a matching C++17 compiler and CMake will be required. See
@@ -349,14 +347,12 @@ Boost          | Components: iostreams
 ZLIB           | Compression library for disk serialization compression            | All                              |
 Blosc          | Recommended dependency for improved disk compression              | All*                             |
 GoogleTest     | A unit testing framework module for C++                           | Unit Tests                       |
-CppUnit        | A unit testing framework module for C++                           | Unit Tests (AX)                  |
 GLFW           | Simple API for OpenGL development                                 | OpenVDB View                     |
 Doxygen        | Documentation generation from C++                                 | Documentation                    |
 OpenEXR        | EXR serialization support                                         | OpenVDB Render                   |
 Imath          | Used half precision floating points and EXR serialization support | Optional (All)                   |
 Log4cplus      | An optional dependency for improved OpenVDB Logging               | Optional (All)                   |
 nanobind       | C++/python bindings                                               | Optional (Python)                |
-NumPy          | Scientific computing with Python                                  | Optional (Python)                |
 LLVM           | Target-independent code generation                                | OpenVDB AX                       |
 
 
@@ -512,7 +508,7 @@ You can add the below CMake snippet to your main `CMakeLists.txt` to bring in
 OpenVDB as a dependency:
 
 @code{.cmake}
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.24)
 list(APPEND CMAKE_MODULE_PATH "/location/of/openvdb/install/lib/cmake/OpenVDB")
 find_package(OpenVDB REQUIRED)
 target_link_libraries(myapp OpenVDB::openvdb)
@@ -605,10 +601,12 @@ OpenVDB uses [imported targets](https://cmake.org/cmake/help/latest/command/add_
 for all its dependencies. For imported Boost compatibility, the following
 versions of CMake are required:
 
-  - Boost 1.80 requires CMake 3.24.2 or newer.
-  - Boost 1.81 requires CMake 3.25.2 or newer.
   - Boost 1.82 requires CMake 3.27.0 or newer.
   - Boost 1.83 requires CMake 3.27.4 or newer.
+  - Boost 1.84 requires CMake 3.28.2 or newer.
+  - Boost 1.85 requires CMake 3.29.3 or newer.
+  - Boost 1.86 requires CMake 3.30.6, 3.31.1, or newer.
+  - Boost 1.87 requires CMake 3.31.4 or newer.
 
 Use the above list to identify the version of CMake you require for your version
 of Boost. Note that this may be implemented into the OpenVDB CMake in the future.

doc/changes.txt

@@ -2,9 +2,161 @@
 
 @page changes Release Notes
 
-@htmlonly <a name="v12_0_2_changes"></a>@endhtmlonly
+@htmlonly <a name="v12_1_2_changes"></a>@endhtmlonly
 @par
-<B>Version 12.0.2</B> - <I>In development</I>
+<B>Version 12.1.2</B> - <I>In development</I>
+
+
+@htmlonly <a name="v12_1_1_changes"></a>@endhtmlonly
+@par
+<B>Version 12.1.1</B> - <I>September 30, 2025</I>
+
+@par
+OpenVDB AX:
+- Fixes:
+  - Fixed an issue which was causing host specific optimization passes to be
+    omitted when using LLVM 16 and higher.
+
+@par
+Houdini:
+  - Fixed a compilation issue with the OpenVDB Activate SOP with Houdini 21
+  [Reported by @callen128]
+
+
+@htmlonly <a name="v12_1_0_changes"></a>@endhtmlonly
+@par
+<B>Version 12.1.0</B> - <I>August 8, 2025</I>
+
+@par
+OpenVDB:
+- New features:
+  - New level set constructor tools::createLevelSetCapsule creates a grid
+    containing a narrow-band level set representation of a capsule (tube
+    with constant radius and sphere caps).
+  - New level set constructor tools::createLevelSetTaperedCapsule creates a
+    grid containing a narrow-band level set representation of a tapered
+    capsule (tube with sphere caps and different radii at both ends, or
+    equivalently the convex hull of two spheres with possibly different
+    centers and radii).
+  - New level set constructor tools::createLevelSetTubeComplex creates a grid
+    containing a narrow-band level set representation of a tube complex (a
+    collection of capsules or tapered capsules defined by endpoint coordinates
+    and segment indices).
+  - New level set constructor tools::createLevelSetDilatedMesh creates a grid
+    containing a narrow-band level set representation of a dilated surface
+    mesh (dilated by a radius in all directions).
+  - New class tools::ConvexVoxelizer, used by the above methods, which can be
+    inherited to implement a convex level set constructor.
+  - Introduced anisotropic surfacing tools in points/PointRasterizeSDF.h and
+    principal component analysis (PCA) methods in points/PrincipalComponentAnalysis.h.
+    The latter tool analyses point neighborhoods and computes affine
+    transformations representing elliptical distributions. The prior tool
+    takes rotational and stretch point attributes (optionally computed from
+      the prior PCA methods) and generates anisotropic surfaces.
+
+- Improvements:
+  - Significantly improved the performance of all LeafNode ValueIterators,
+    up to 5x on some platforms and up to 10x when delay loading is enabled.
+    Construction of a ValueIterator from a leaf node now requests the leaf
+    buffers ahead of iteration to avoid potentially expensive API calls.
+  - Improved the performance of PointRasterizeSDF.h tools with larger radii
+    with better bound computation approximations.
+  - Significant performance improvement to delay loaded files - the warning
+    logic which checks the underlying mapped file for the last modified time
+    has been removed, resulting in performance gains upwards of 10x when
+    loading in node data buffers. Note that the check that was removed is
+    entirely redundant on Windows and would only print a warning on other
+    system.
+    [Contributed by jjtParadox]
+  - Added OPENVDB_HAS_INVOKABLE_MEMBER_FUNCTION and OPENVDB_HAS_MEMBER_FUNCTION
+    macros to help determine the presence and compatibility of interface
+    member functions at compile time.
+  - Added OPENVDB_ASSUME macros to mimic builtin assume and C++23 assume
+    attributes.
+  - Improved read and write of PLY files with vdb_tool so they support Vec3d
+    and 64 bit attributes. Changed vdb_tool version number from 10.6.1 to
+    10.7.0.
+
+- API Changes:
+  - Mat3 and Mat4 functions have been marked [[nodiscard]] where it may be
+    confusing if they are operating in place or returning a result, in
+    particular tranpose, invert, adjoint, and timesDiagonal.
+  - Re-worked the API in PointRasterizeSDF.h with the addition of anisotropic
+    surfacing kernels. The new API exposes more concise free functions which
+    take structs of parameters. The old API remains supported but is
+    deprecated.
+  - Deprecated providing a filter or interrupter as arguments to
+    points::rasterize. These can instead be implemented on user transfer
+    schemes.
+  - Transfer schemes provided to points::rasterize can now optionally
+    implement a rasterizePoints callback that takes a range of points per
+    voxel.
+
+- Fixes:
+  - Fixed a bug in points::rasterizeSpheres and points::rasterizeSmoothSpheres
+    which could cause sections of the generated surface to incorrectly be
+    marked as negative interior values.
+  - Fixed a bug in points::rasterizeSmoothSpheres which could result in
+    incomplete surface reconstruction with significantly larger search
+    distances.
+  - Fixed some precision issues in various Matrix methods.
+  - Fixed bugs in vdb_tool that prevented build with newer namespaces in
+    nanovdb.
+
+@par
+OpenVDB AX:
+- Improvements:
+  - Added support for LLVM versions greater than 15. Upgraded CI to test with
+    LLVM versions 16, 17, 18, 19 and 20.
+  - As of this release, LLVM 15 is the minimum required version for OpenVDB
+    AX. Note that there is an issue with LLVM 17 symbols which makes it
+    incompatible with the OpenVDB Python plugin. AS such, LLVM version 18 and
+    greater are the recommended LLVM versions to use, with LLVM 18 being the
+    new future minimum version.
+  - Significant performance improvement to the compilation of AX kernels when
+    using LLVM 18 and greater.
+  - Significant backend refactoring to AX IR generation to support newer
+    versions of LLVM. In particular, parts of the codegen::Function and
+    codegen::FunctionBuilder API require new usage from LLVM 16 due to
+    the LLVM opaque pointer changes. If you're not using the OpenVDB AX
+    Function codegen API then no client changes should be necessary.
+  - Migrated OpenVDB AX unit tests from cppunit to gtest
+    [Contributed by Tim Straubinger]
+
+- Fixes:
+  - Fixed a case of undefined behaviour when explicitly casting variables to
+    the same type as their storage type e.g:
+      double a; double b = double(a);
+  - Fixed an AX compiler error which would produce invalid IR when using 64bit
+    integer variables for matrix array offsetting e.g:
+      int64 a = 0; mat4f b = 1; float c = b[a,a];
+
+@par
+NanoVDB:
+  - Added nanovdb::openToIndexVDB, which can convert an OpenVDB grid into a
+    NanoVDB IndexGrid.
+  - Added new options "--index" and "--onIndex" to the command-line tool
+    nanovdb_convert so it can produce IndexGrids.
+  - Fixed memory leak in DeviceBuffer.
+  - Added constructor for DeviceBuffer from an existing HostBuffer.
+  - Added VoxelBlockManager, an acceleration structure for sequential access
+    and stencil ops over active voxels.
+  - Added helper functions for kernel launches with shared memory.
+  - Added support for CUDA 13.0.
+  - Fix warnings and compilation errors for GCC and Clang.
+  - Fixed inconsistent usage of util::cuda::mallocAsync/freeAsync that
+    affected vGPUs.
+  - Added support for custom memory resources in PointsToGrid.
+  - Fixed race condition in split/mergeGridHandles.
+  - Fixed offset bug in nanovdb::tools::cuda::IndexToGrid related to non-POD
+    build types.
+    [Contributed by Andreas Henne]
+
+@par
+Houdini:
+  - Define OP_InputIdx and OP_OutputIdx for Houdini 21.0 compatibility
+  - Add Houdini 21 style camera interface to support LOP cameras
+  - Include env flag for avoiding stream writing (was backported to 19.5)
 
 
 @htmlonly <a name="v12_0_1_changes"></a>@endhtmlonly

doc/dependencies.txt

@@ -41,14 +41,14 @@ OpenVDB Print           | Core Library dependencies                       | -
 OpenVDB LOD             | Core Library dependencies                       | -
 OpenVDB Render          | Core Library dependencies                       | OpenEXR, Imath::Imath, libpng
 OpenVDB View            | Core Library dependencies, OpenGL, GLFW3, GLEW* | -
-OpenVDB Python          | Core Library dependencies, Python, nanobind     | NumPy
+OpenVDB Python          | Core Library dependencies, Python, nanobind     | -
 OpenVDB AX              | Core Library dependencies, LLVM                 | Bison, Flex
 NanoVDB                 | -                                               | Core Library, CUDA, TBB, Blosc, ZLib
-OpenVDB UnitTests       | Core Library dependencies, GoogleTest           | CppUnit**
+OpenVDB UnitTests       | Core Library dependencies, GoogleTest, numpy*   | -
 OpenVDB Documentation   | Doxygen                                         | -
 
  - @b * GLEW is only required for building the vdb_view binary on Windows.
- - @b ** CppUnit is only required for building the AX unit tests.
+ - @b * numpy only required for python binding unit tests
  - @b Note - Bison and Flex are only required for re-generation of the AX
  grammar which is not typically necessary for the majority of users.
 
@@ -56,41 +56,39 @@ OpenVDB Documentation   | Doxygen                                         | -
 
 Package        | Minimum | Recommended | Description                                                       | apt-get | Homebrew | Source
 -------------- | ------- | ----------- | ----------------------------------------------------------------- | ------- | -------- | ------
-CMake          | 3.20    | Latest      | Cross-platform family of tools designed to help build software    | Y       | Y        | https://cmake.org
+CMake          | 3.24    | Latest      | Cross-platform family of tools designed to help build software    | Y       | Y        | https://cmake.org
 GCC            | 11.2.1  | 11.2.1      | C++ 17 Compiler: The GNU Compiler Collection                      | Y       | Y        | https://www.gnu.org/software/gcc
 Clang          | 5.0     | Latest      | C++ 17 Compiler: A C language family frontend for LLVM            | Y       | Y        | https://clang.llvm.org
 Intel ICC      | 19      | Latest      | C++ 17 Compiler: Intels C++ Compiler                              | Y       | Y        | https://software.intel.com/en-us/c-compilers
 MSVC           | 19.30   | 19.30       | C++ 17 Compiler: Microsoft Visual C++ Compiler                    | Y       | Y        | https://visualstudio.microsoft.com/vs
-Imath          | 3.1     | Latest      | Half precision floating points                                    | Y       | Y        | http://www.openexr.com
-OpenEXR        | 3.1     | Latest      | EXR serialization support                                         | Y       | Y        | http://www.openexr.com
-TBB            | 2020.3  | 2020.3      | Threading Building Blocks - template library for task parallelism | Y       | Y        | https://www.threadingbuildingblocks.org
+Imath          | 3.2     | >= 3.3      | Half precision floating points                                    | Y       | Y        | http://www.openexr.com
+OpenEXR        | 3.2     | >= 3.3      | EXR serialization support                                         | Y       | Y        | http://www.openexr.com
+TBB            | 2020.3  | >= 2021     | Threading Building Blocks - template library for task parallelism | Y       | Y        | https://www.threadingbuildingblocks.org
 ZLIB           | 1.2.7   | Latest      | Compression library for disk serialization compression            | Y       | Y        | https://www.zlib.net
-Boost          | 1.80    | 1.82        | Components: iostreams                                             | Y       | Y        | https://www.boost.org
-LLVM           | 13.0.0  | 15.0.0*     | Target-independent code generation                                | Y       | Y        | https://llvm.org/
+Boost          | 1.82    | >= 1.85     | Components: iostreams                                             | Y       | Y        | https://www.boost.org
+LLVM           | 15.0.0* | 18.0.0      | Target-independent code generation                                | Y       | Y        | https://llvm.org/
 Bison          | 3.7.0   | 3.7.0       | General-purpose parser generator                                  | Y       | Y        | https://www.gnu.org/software/gcc
 Flex           | 2.6.4   | 2.6.4       | Fast lexical analyzer generator                                   | Y       | Y        | https://github.com/westes/flex
 Python         | 3.10    | 3.11        | The python interpreter and libraries                              | Y       | Y        | https://www.python.org
-nanobind       | 2.0.0   | 2.1.0       | C++/python bindings                                               | Y       | Y        | https://nanobind.readthedocs.io
-NumPy          | 1.23.0  | 1.26.0      | Scientific computing with Python                                  | Y       | Y        | http://www.numpy.org
+nanobind**     | 2.0.0   | >= 2.5.0    | C++/python bindings                                               | Y       | Y        | https://nanobind.readthedocs.io
 GoogleTest     | 1.10    | Latest      | A unit testing framework module for C++                           | Y       | Y        | https://github.com/google/googletest
-CppUnit        | 1.10    | Latest      | A unit testing framework module for C++                           | N       | Y        | https://freedesktop.org/wiki/Software/cppunit
-Blosc          | 1.17.0* | 1.17.0      | Recommended dependency for improved disk compression              | Y       | Y        | https://github.com/Blosc/c-blosc/releases
+Blosc          | 1.17.0* | Latest      | Recommended dependency for improved disk compression              | Y       | Y        | https://github.com/Blosc/c-blosc/releases
 Log4cplus      | 1.1.2   | Latest      | An optional dependency for improved OpenVDB Logging               | Y       | Y        | https://github.com/log4cplus/log4cplus
 libpng         | -       | Latest      | Library for manipulating PNG images                               | Y       | Y        | http://www.libpng.org/pub/png/libpng.html
-GLFW           | 3.1     | > 3.3       | Simple API for OpenGL development                                 | Y       | Y        | https://www.glfw.org
+GLFW           | 3.3     | Latest      | Simple API for OpenGL development                                 | Y       | Y        | https://www.glfw.org
 OpenGL         | 3.2     | Latest      | Environment for developing portable graphics applications         | Y       | Y        | https://www.opengl.org
 GLEW           | 1.0.0   | Latest      | A cross-platform OpenGL extension loading library.                | Y       | Y        | http://glew.sourceforge.net
 CUDA           | -       | Latest      | Parallel computing platform for graphical processing units.       | Y       | N        | https://developer.nvidia.com/cuda-downloads
 Doxygen        | 1.8.8   | 1.8.11      | Documentation generation from C++                                 | Y       | Y        | http://www.doxygen.nl
 
- - @b * See the note in [known issues](@ref depKnownIssues) regarding supported blosc/llvm versions.
+ - @b *  See the note in [known issues](@ref depKnownIssues) regarding supported blosc/llvm versions.
+ - @b ** See the note in [known issues](@ref depKnownIssues) regarding supported nanobind build issues.
 
 @subsection depKnownIssues Known Issues
 
- - @b LLVM >= 15. LLVM has recently changed their IR pointer data types to be
- completely opaque. Some support is provided in LLVM 15 but tests with AX show
- that this is extremely unstable. AX currently only supports LLVM versions up
- until 14.X.X. See https://llvm.org/docs/OpaquePointers.html for more details.
+ - @b On Linux, LLVM == 17 has symbol issues which makes it incompatible when
+ used with the OpenVDB Python plugin. LLVM versions greater than 18 should be
+ preferred.
 
  - @b GLFW: Crash with GLFW 3.2.1 when used with EGL on Linux. OpenVDB View may
  segfault on closure. Fixed in GLFW 3.3
@@ -112,6 +110,11 @@ Doxygen        | 1.8.8   | 1.8.11      | Documentation generation from C++
  - https://github.com/Blosc/c-blosc/issues/260
  - https://github.com/Blosc/c-blosc/issues/261
 
+ - @b nanobind: Nanobind requires a fast-hash-map implementation library called
+ tsl-robin-map. If you're installing nanobind through homebrew, this library
+ may not be installed correctly and OpenVDB's CMake will only produce a warning.
+ Make sure to also: `brew install robin-map`.
+
 @section depInstallingDependencies Installing Dependencies
 
 This section details a number of ways to get you up and running with the
@@ -148,14 +151,12 @@ apt-get install libblosc-dev            # Blosc
 apt-get install llvm-15-dev             # LLVM
 # Python
 apt-get install python-dev              # Python
-apt-get install python-numpy            # NumPy
 pip install nanobind                    # nanobind
 # Optional
 apt-get install libpng-dev              # libpng
 apt-get install libopenexr-dev          # OpenEXR
 apt-get install liblog4cplus-dev        # Log4cplus
 apt-get install googletest              # GoogleTest
-apt-get install libcppunit-dev          # CppUnit
 # vdb_view
 apt-get install libglfw3-dev            # GLFW
 # Documentation
@@ -181,11 +182,9 @@ brew install c-blosc                   # blosc
 brew install llvm                      # LLVM
 # Python
 brew install python                    # Python
-brew install numpy                     # NumPy
-brew install nanobind                  # nanobind
+brew install nanobind robin-map        # nanobind
 # Unit Tests
 brew install gtest                     # GoogleTest
-brew install cppunit                   # CppUnit
 # vdb_view
 brew install glfw                      # GLFW
 # vdb_render

doc/python.txt

@@ -441,11 +441,9 @@ not on their active states or other attributes.
 
 Large data sets are often handled in Python using
 <a href="http://www.numpy.org/">NumPy</a>.
-The OpenVDB Python module can optionally be compiled with NumPy support.
-With NumPy enabled, the @b copyFromArray and @b copyToArray grid methods
-can be used to exchange data efficiently between scalar-valued grids
-and three-dimensional NumPy arrays and between vector-valued grids and
-four-dimensional NumPy arrays.
+The @b copyFromArray and @b copyToArray grid methods can be used to exchange
+data efficiently between scalar-valued grids and three-dimensional NumPy
+arrays and between vector-valued grids and four-dimensional NumPy arrays.
 @code{.py}
 >>> import pyopenvdb as vdb
 >>> import numpy

fvdb/.clang-format

@@ -1,139 +0,0 @@
----
-Language: Cpp
-Standard: c++20
-
-# Indentation
-TabWidth: 4
-IndentWidth: 4
-UseTab: Never
-IndentPPDirectives: None
-IndentWrappedFunctionNames: false
-NamespaceIndentation: None
-
-# Empty lines
-KeepEmptyLinesAtTheStartOfBlocks: false
-MaxEmptyLinesToKeep: 1
-
-# Line length
-ColumnLimit: 100
-
-# Line endings
-DeriveLineEnding: false
-LineEnding: LF
-
-# Breaking and Penalties
-BreakBeforeBinaryOperators: None
-BreakBeforeBraces: Attach
-BreakBeforeTernaryOperators: true
-BreakConstructorInitializersBeforeComma: false
-BreakInheritanceList: BeforeColon
-BreakStringLiterals: false
-
-PenaltyBreakAssignment: 2
-PenaltyBreakBeforeFirstCallParameter: 19
-PenaltyBreakComment: 300
-PenaltyBreakFirstLessLess: 120
-PenaltyBreakString: 1000
-PenaltyExcessCharacter: 1000000
-PenaltyReturnTypeOnItsOwnLine: 60
-
-# Spacing and padding
-SpaceAfterCStyleCast: false
-SpaceAfterTemplateKeyword: true
-SpaceAfterLogicalNot: false
-SpaceAfterControlStatementKeyword: true
-SpaceBeforeAssignmentOperators: true
-SpaceBeforeParens: ControlStatements
-SpaceBeforeRangeBasedForLoopColon: false
-SpaceInEmptyParentheses: false
-SpacesInAngles: false
-SpacesInContainerLiterals: false
-SpacesInCStyleCastParentheses: false
-SpacesInParentheses: false
-SpacesBeforeTrailingComments: 1
-SpaceBeforeCpp11BracedList: false
-SpaceBeforeCtorInitializerColon: true
-SpaceBeforeInheritanceColon: true
-SpaceBeforeSquareBrackets: false
-SpacesInSquareBrackets: false
-SpaceBeforeCaseColon: false
-
-# Brace placement
-BraceWrapping:
-  AfterClass: false
-  AfterControlStatement: false
-  AfterEnum: false
-  AfterFunction: false
-  AfterNamespace: false
-  AfterStruct: false
-  AfterUnion: false
-  BeforeCatch: false
-  BeforeElse: false
-  IndentBraces: false
-  SplitEmptyFunction: false
-  SplitEmptyRecord: false
-  SplitEmptyNamespace: false
-Cpp11BracedListStyle: true
-
-# Function definitions
-# BreakAfterReturnType: AllDefinitions
-AlwaysBreakAfterDefinitionReturnType: All
-
-AttributeMacros:
-  - __host__
-  - __device__
-  - __hostdev__
-  - __global__
-  - __forceinline__
-  - __shared__
-  - __launch_bounds__
-
-# Alignment
-AlignConsecutiveAssignments: true
-AlignConsecutiveBitFields: true
-AlignConsecutiveDeclarations: false
-AlignConsecutiveMacros: true
-AlignEscapedNewlines: Left
-AlignOperands: true
-AlignTrailingComments:
-  Kind: Always
-  OverEmptyLines: 2
-
-# Single line allowances
-BinPackParameters: false
-BinPackArguments: false
-AllowAllArgumentsOnNextLine: true
-AllowAllConstructorInitializersOnNextLine: true
-AllowAllParametersOfDeclarationOnNextLine: true
-AllowShortBlocksOnASingleLine: true
-AllowShortCaseLabelsOnASingleLine: true
-AllowShortEnumsOnASingleLine: true
-AllowShortFunctionsOnASingleLine: Inline
-AllowShortIfStatementsOnASingleLine: false
-AllowShortLambdasOnASingleLine: true
-AllowShortLoopsOnASingleLine: false
-
-# Sorting
-IncludeBlocks: Regroup
-IncludeIsMainRegex: "$"
-IncludeCategories:
-  - Regex:           '^"' # quoted includes
-    Priority:        1
-  - Regex:           '^<fvdb/' # fvdb includes
-    Priority:        2
-  - Regex:           '^<nanovdb/' # nanovdb includes
-    Priority:        3
-  - Regex:           '^<(torch|c10|THC|ATen)/' # torch includes
-    Priority:        4
-  - Regex:           '^<(thrust|cub|cuda)/' # CCCL includes
-    Priority:        5
-  - Regex:           '^<(cooperative_groups|cuco|cuda.h|cuda_|device_types|math_constants|nvtx3|cute)' # CUDA includes
-    Priority:        6
-  - Regex:           '^<.*\..*' # other system includes (e.g. with a '.')
-    Priority:        7
-  - Regex:           '^<[^.]+' # STL includes (no '.')
-    Priority:        8
-IncludeIsMainSourceRegex: "$"
-SortIncludes: true
-SortUsingDeclarations: true
-

fvdb/.clangd

@@ -1,71 +0,0 @@
-# https://clangd.llvm.org/config
-
-# Apply a config conditionally to all C files
-If:
-  PathMatch: .*\.(c|h)$
-
----
-
-# Apply a config conditionally to all C++ files
-If:
-  PathMatch: .*\.(c|h)pp
-
----
-
-# Apply a config conditionally to all CUDA files
-If:
-  PathMatch: .*\.cuh?
-CompileFlags:
-  Add:
-    - "-x"
-    - "cuda"
-    # No error on unknown CUDA versions
-    - "-Wno-unknown-cuda-version"
-    # Allow variadic CUDA functions
-    - "-Xclang=-fcuda-allow-variadic-functions"
-Diagnostics:
-  Suppress:
-    - "variadic_device_fn"
-    - "attributes_not_allowed"
-    - "unknown_cuda_version"
-    - "unknown_type_name"
-    - "implicit_return_from_non_void_function"
-    - "no_template_args_on_forwarding_function"
-
----
-
-# Tweak the clangd parse settings for all files
-CompileFlags:
-  Add:
-    # report all errors
-    - "-ferror-limit=0"
-    - "-fmacro-backtrace-limit=0"
-    - "-ftemplate-backtrace-limit=0"
-    # Skip the CUDA version check
-    - "--no-cuda-version-check"
-  Remove:
-    # remove gcc's -fcoroutines
-    - -fcoroutines
-    # remove nvc++ flags unknown to clang
-    - "-gpu=*"
-    - "-stdpar*"
-    # remove nvcc flags unknown to clang
-    - "-arch*"
-    - "-gencode*"
-    - "--generate-code*"
-    - "-ccbin*"
-    - "-t=*"
-    - "--threads*"
-    - "-Xptxas*"
-    - "-Xcudafe*"
-    - "-Xfatbin*"
-    - "-Xcompiler*"
-    - "--diag-suppress*"
-    - "--diag_suppress*"
-    - "--compiler-options*"
-    - "--extended-lambda"
-    - "--expt-extended-lambda"
-    - "--expt-relaxed-constexpr"
-    - "-forward-unknown-to-host-compiler"
-    - "-Werror=cross-execution-space-call"
-    - "-Werror=all-warnings"

fvdb/.devcontainer/devcontainer.json

@@ -1,41 +0,0 @@
-// File location: openvdb/fvdb/.devcontainer/devcontainer.json
-{
-    // A friendly name for the container configuration shown in VS Code
-    "name": "FVDB Development Environment",
-
-    // Tells VS Code to use Docker Compose to define and run the environment.
-    // The path is relative to this devcontainer.json file.
-    "dockerComposeFile": [
-        "../docker-compose.yml" // Points to openvdb/fvdb/docker-compose.yml
-    ],
-
-    // The name of the specific service within the docker-compose.yml file
-    // that VS Code should connect to.
-    "service": "fvdb-dev",
-
-    // Specifies the default directory VS Code should open *inside* the container.
-    // Since the docker-compose.yml mounts the host's `openvdb/` directory to `/openvdb`
-    // in the container, the fvdb code resides at `/openvdb/fvdb`.
-    "workspaceFolder": "/openvdb/fvdb",
-
-    // Extensions to install inside the container's VS Code server
-    "customizations": {
-        "vscode": {
-            "extensions": [
-                "ms-python.python", // Python language support
-                "ms-vscode.cpptools", // C/C++ language support
-                "ms-vscode.cmake-tools", // CMake integration
-                "ms-azuretools.vscode-docker" // Docker integration (useful for managing containers)
-            ],
-            "settings": {
-                "python.defaultInterpreterPath": "/opt/conda/envs/fvdb/bin/python"
-            }
-        }
-    },
-
-    // Optional: What to do when the VS Code window is closed.
-    // "stopCompose" will stop the container(s) defined in the compose file.
-    // "none" would leave them running.
-    "shutdownAction": "stopCompose"
-}
-

fvdb/.github/workflows/building.yml

@@ -1,106 +0,0 @@
-name: Building Release Wheels
-
-on:
-  release:
-    types: [published, edited]
-  workflow_dispatch:
-
-jobs:
-
-  wheel:
-    runs-on:
-      - self-hosted
-
-    strategy:
-      fail-fast: false
-      matrix:
-        # support version based on: https://download.pytorch.org/whl/torch/
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
-        torch-version: [2.1.0, 2.1.1, 2.1.2, 2.2.0, 2.2.1, 2.2.2, 2.3.0]
-        cuda-version: ['12.1.1']
-        exclude:
-          - torch-version: 2.1.2
-            python-version: '3.12'
-          - torch-version: 2.1.1
-            python-version: '3.12'
-          - torch-version: 2.1.0
-            python-version: '3.12'
-
-    steps:
-      - uses: actions/checkout@v2
-      - name: Generate release_environment.yml
-        run: |
-          echo "cp env/release_base_environment.yml release_environment.yml"
-          cp env/release_base_environment.yml release_environment.yml
-          echo "  - python=${{ matrix.python-version }}" >> release_environment.yml
-          echo "  - pytorch=${{ matrix.torch-version }}" >> release_environment.yml
-          perl -E '"${{ matrix.cuda-version }}" =~ /^(\d+\.\d+)/; say "  - pytorch-cuda=$1"' >> release_environment.yml
-          perl -E '"${{ matrix.cuda-version }}" =~ /^(\d+)\.(\d+)/; say "  - cuda>=$1.$2.0, <$1." . ($2+1) . ".0"' >> release_environment.yml
-          perl -E '"${{ matrix.cuda-version }}" =~ /^(\d+)\.(\d+)/; say "  - cuda-nvcc>=$1.$2.0, <$1." . ($2+1) . ".0"' >> release_environment.yml
-
-      - name: Set up fvdb_release Conda env
-        uses: conda-incubator/setup-miniconda@v3
-        with:
-          miniconda-version: "latest"
-          mamba-version: "*"
-          channels: nvidia,pytorch,conda-forge,defaults
-          channel-priority: true
-          activate-environment: fvdb_release
-          environment-file: release_environment.yml
-
-      - name: Set version
-        run: |
-          VERSION=`sed -n "s/^__version__ = '\(.*\)'/\1/p" fvdb/__init__.py`
-          TORCH_VERSION=`echo "pt${{ matrix.torch-version }}" | sed "s/..$//" | sed "s/\.//g"`
-          CUDA_VERSION=`perl -E '"${{ matrix.cuda-version }}" =~ /^(\d+)\.(\d+)/; say "cu$1$2"'`
-          echo "New version name: $VERSION+$TORCH_VERSION$CUDA_VERSION"
-          sed -i "s/$VERSION/$VERSION+$TORCH_VERSION$CUDA_VERSION/" fvdb/__init__.py
-        shell:
-          bash -el {0}
-
-      - name: Build wheel
-        run: |
-          conda activate fvdb_release
-          mkdir dist
-          TORCH_CUDA_ARCH_LIST="6.1;7.0;7.5;8.0;8.6+PTX" python setup.py bdist_wheel --dist-dir=dist
-        shell:
-          bash -el {0}
-
-      - name: Rename wheel
-        run: |
-          python scripts/rename_wheels.py ${{ matrix.torch-version }} `perl -E '"${{ matrix.cuda-version }}" =~ /^(\d+)\.(\d+)/; say "cu$1$2"'`
-        shell:
-          bash -el {0}
-
-
-      - name: Release
-        uses: softprops/action-gh-release@v1
-        if: startsWith(github.ref, 'refs/tags/')
-        with:
-          token: ${{ secrets.RELEASE_ACTION_TOKEN }}
-          files: |
-            dist/*.whl
-
-      # - name: Upload to artifacts
-      #   uses: actions/upload-artifact@v3
-      #   with:
-      #     name: wheels
-      #     path: |
-      #       dist/*.whl
-
-      # - name: Configure AWS
-      #   uses: aws-actions/configure-aws-credentials@v1
-      #   with:
-      #     aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
-      #     aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
-      #     aws-region: ap-northeast-1
-
-      # - name: Upload wheel
-      #   run: |
-      #     aws s3 sync dist s3://nksr/whl/torch-${{ matrix.torch-version }}+${{ matrix.cuda-version }} --grants read=uri=http://acs.amazonaws.com/groups/global/AllUsers
-
-      - name: Clean Conda
-        run: |
-          conda clean -pty
-        shell:
-          bash -el {0}

fvdb/.github/workflows/tests.yml

@@ -1,221 +0,0 @@
-name: Running Tests
-
-on:
-  pull_request:
-    branches: [main]
-    paths-ignore:
-      - 'debug/**'
-      - 'docs/**'
-      - 'examples/**'
-      - 'notebooks/**'
-      - 'scripts/**'
-
-# Allow subsequent pushes to the same PR or REF to cancel any previous jobs.
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
-  cancel-in-progress: true
-
-permissions:
-  contents: write
-  deployments: write
-
-jobs:
-  fvdb-build:
-    if: ${{ !startsWith(github.event.pull_request.title, 'Draft:') }}
-    name: fVDB Build
-    runs-on:
-      - self-hosted
-    container:
-      image: aswf/ci-openvdb:2024
-      env:
-        PYTHONPATH: ""
-      options: --rm
-    defaults:
-      run:
-        shell: bash -el {0}
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Set up fvdb_build Conda env
-        uses: conda-incubator/setup-miniconda@v3
-        with:
-          miniforge-version: latest
-          conda-remove-defaults: "true"
-          activate-environment: fvdb_build
-          environment-file: env/build_environment.yml
-
-
-      - name: Buid fvdb
-        run: |
-          TORCH_CUDA_ARCH_LIST="7.0;7.5;8.0;8.6+PTX" MAX_JOBS=$(($(nproc) < $(free -g | awk '/^Mem:/{jobs=int($4/2.5); if(jobs<1) jobs=1; print jobs}') ? $(nproc) : $(free -g | awk '/^Mem:/{jobs=int($4/2.5); if(jobs<1) jobs=1; print jobs}'))) conda run --no-capture-output -n fvdb_build python setup.py bdist_wheel --dist-dir=dist
-
-      - name: Upload package
-        uses: actions/upload-artifact@v4
-        with:
-            name: fvdb-test-package
-            path: dist/*.whl
-            retention-days: 2
-
-      - name: Cleanup
-        if: always()
-        run: |
-          echo "Cleaning up /__w/_temp directory"
-          sudo rm -rf /__w/_temp/*
-          echo "Cleanup completed"
-
-
-  fvdb-unit-test:
-    needs: [fvdb-build]
-    name: fVDB Unit Tests
-    runs-on:
-      - self-hosted
-    container:
-      image: aswf/ci-openvdb:2024
-      env:
-        PYTHONPATH: ""
-      options: --rm
-    defaults:
-      run:
-        shell: bash -el {0}
-    steps:
-      - uses: actions/checkout@v4
-      - name: Set up fvdb_test Conda env
-        uses: conda-incubator/setup-miniconda@v3
-        with:
-          miniforge-version: latest
-          conda-remove-defaults: "true"
-          activate-environment: fvdb_test
-          environment-file: env/test_environment.yml
-
-      - name: Download package
-        uses: actions/download-artifact@v4
-        with:
-            name: fvdb-test-package
-            path: ./dist
-
-      - name: Install package
-        run: |
-            conda activate fvdb_test
-            pip install ./dist/*.whl
-
-      - name: Run tests
-        run: |
-            cd tests;
-            pytest -v unit
-
-      - name: Cleanup
-        if: always()
-        run: |
-          echo "Cleaning up /__w/_temp directory"
-          sudo rm -rf /__w/_temp/*
-          echo "Cleanup completed"
-
-  fvdb-docs-test:
-    needs: [fvdb-build]
-    name: fVDB Documentation Tests
-    runs-on:
-      - self-hosted
-    container:
-      image: aswf/ci-openvdb:2024
-      env:
-        PYTHONPATH: ""
-      options: --rm
-    defaults:
-      run:
-        shell: bash -el {0}
-    steps:
-      - uses: actions/checkout@v4
-      - name: Set up fvdb_test Conda env
-        uses: conda-incubator/setup-miniconda@v3
-        with:
-          miniforge-version: latest
-          conda-remove-defaults: "true"
-          activate-environment: fvdb_test
-          environment-file: env/test_environment.yml
-
-      - name: Download package
-        uses: actions/download-artifact@v4
-        with:
-            name: fvdb-test-package
-            path: ./dist
-
-      - name: Install package
-        run: |
-            conda activate fvdb_test
-            pip install ./dist/*.whl
-
-      - name: Run tests
-        run: |
-            cd .. && pytest --markdown-docs fvdb/docs
-
-      - name: Cleanup
-        if: always()
-        run: |
-          echo "Cleaning up /__w/_temp directory"
-          sudo rm -rf /__w/_temp/*
-          echo "Cleanup completed"
-
-  fvdb-benchmarks:
-    needs: [fvdb-build]
-    name: fVDB Continuous Benchmarking
-    runs-on:
-      - self-hosted
-    container:
-      image: aswf/ci-openvdb:2024
-      env:
-        PYTHONPATH: ""
-      options: --rm
-    defaults:
-      run:
-        shell: bash -el {0}
-    steps:
-      - uses: actions/checkout@v4
-      - name: Set up fvdb_test Conda env
-        uses: conda-incubator/setup-miniconda@v3
-        with:
-          miniforge-version: latest
-          conda-remove-defaults: "true"
-          activate-environment: fvdb_test
-          environment-file: env/test_environment.yml
-
-      - name: Download package
-        uses: actions/download-artifact@v4
-        with:
-            name: fvdb-test-package
-            path: ./dist
-
-      - name: Install package
-        run: |
-            conda activate fvdb_test
-            pip install ./dist/*.whl
-
-      - name: Disable git ownership verification
-        run: |
-          git config --global --add safe.directory "$(pwd)"
-
-      - name: Run benchmarks
-        run: |
-          cd tests;
-          pytest benchmark --benchmark-json benchmark/output.json
-
-      - name: Store benchmark result
-        uses: benchmark-action/github-action-benchmark@v1
-        with:
-            name: Python Benchmark with pytest-benchmark
-            tool: 'pytest'
-            output-file-path: tests/benchmark/output.json
-            # Use personal access token instead of GITHUB_TOKEN due to https://github.community/t/github-action-not-triggering-gh-pages-upon-push/16096
-            github-token: ${{ secrets.GITHUB_TOKEN }}
-            auto-push: true
-            # Show alert with commit comment on detecting possible performance regression
-            alert-threshold: '200%'
-            comment-on-alert: true
-            fail-on-alert: true
-            alert-comment-cc-users: '@swahtz'
-
-      - name: Cleanup
-        if: always()
-        run: |
-          echo "Cleaning up /__w/_temp directory"
-          sudo rm -rf /__w/_temp/*
-          echo "Cleanup completed"

fvdb/.gitignore

@@ -1,60 +0,0 @@
-# Generated version file
-fvdb/version.py
-
-# Generated compile_commands.json symlink
-compile_commands.json
-
-# Build files
-/build/*
-/src/benchmarks/build/*
-/src/tests/build/*
-/src/build/*
-
-*.creator
-*.includes
-*.files
-*.config
-*.obj
-*.off
-__pycache__
-*.pyc
-*.creator.user
-*.egg-info
-*.so
-dist
-.cache
-.idea
-.eggs
-cmake-build-debug
-external
-.polyscope.ini
-imgui.ini
-datasets/lib/external
-datasets/lib/build
-*.png
-!docs/imgs/**/*.png
-!notebooks/img/**/*.png
-*.ply
-apex/
-*.zip
-*.npz
-!kernel.npz
-*.npy
-*.o
-*.h5
-docs/_build
-fvdb/include/
-trash
-scratch
-_build
-docs/build
-*tmp*.py
-*.whl
-tests/benchmark/data
-releases/
-/data/
-/data/*
-!tests/data
-.vscode/launch.json
-lightning_logs
-tests/data/

fvdb/.gitlab-ci.yml

@@ -1,30 +0,0 @@
-# Gitlab CI Pipeline for building and deploying the documentation
-default:
-  image: mambaorg/micromamba:focal-cuda-12.1.1
-  tags:
-    - os/linux
-    - type/docker
-
-before_script:
-    # - apt-get update
-    - export TORCH_CUDA_ARCH_LIST="Turing"
-    - export FORCE_CUDA=1
-    # install all required libraries using existing conda environment requirements file:
-    - micromamba env create -f env/build_environment.yml
-    - eval "$(micromamba shell hook --shell bash)"
-    - micromamba activate
-    - micromamba activate fvdb_build
-
-pages:
-  stage: deploy
-  script:
-    # build and publish automated documentation with Sphinx:
-    - export MAX_JOBS=$(free -g | awk '/^Mem:/{jobs=int($4/3); if(jobs<1) jobs=1; print jobs}')
-    - python setup.py build_ext --inplace
-    - sphinx-build -E -a docs/ public/
-
-  artifacts:
-    paths:
-    - public
-  only:
-  - main # Documentation will only be generated on the main branch

fvdb/.vscode/c_cpp_properties.json

@@ -1,51 +0,0 @@
-{
-    "configurations": [
-        {
-            "name": "Linux",
-            "includePath": [
-                "${env:CONDA_PREFIX}/envs/fvdb/include",
-                "${env:CONDA_PREFIX}/envs/fvdb/targets/x86_64-linux/include/",
-                "${workspaceFolder}/src/tests/build/_deps/googletest-src/googletest/include",
-                "${workspaceFolder}/src/tests/build/_deps/googletest-src/googlemock/include",
-                "${workspaceFolder}/src/tests/build/_deps/nvtx3-src/include",
-                "${workspaceFolder}/src",
-                "${workspaceFolder}/../nanovdb",
-                "${workspaceFolder}/external/glm",
-                "${workspaceFolder}/external/cudnn_fe/include",
-                "${workspaceFolder}/external/cutlass/include",
-                "${workspaceFolder}/external/tinyply/source",
-                "${env:CONDA_PREFIX}/envs/fvdb/include/python3.11",
-                "${env:CONDA_PREFIX}/envs/fvdb/lib/python3.11/site-packages/torch/include",
-                "${env:CONDA_PREFIX}/envs/fvdb/lib/python3.11/site-packages/torch/include/torch/csrc/api/include",
-                "${env:CONDA_PREFIX}/envs/fvdb/lib/python3.11/site-packages/torch/include/THC",
-                "${env:CONDA_PREFIX}/envs/fvdb/lib/python3.11/site-packages/torch/include/c10",
-                "${default}"
-            ],
-            "macFrameworkPath": [
-                "${default}"
-            ],
-            "defines": [
-                "${default}",
-                "NDEVELOP_IDE_ONLY",
-                "__CUDA_ARCH__=800"
-            ],
-            "forcedInclude": [
-                "${default}"
-            ],
-            "compileCommands": "${default}",
-            "browse": {
-                "limitSymbolsToIncludedHeaders": true,
-                "databaseFilename": "${default}",
-                "path": [
-                    "${default}"
-                ]
-            },
-            "intelliSenseMode": "${default}",
-            "cStandard": "${default}",
-            "cppStandard": "c++20",
-            "compilerPath": "${default}",
-            "configurationProvider": "ms-vscode.cpptools"
-        }
-    ],
-    "version": 4
-}

fvdb/.vscode/extensions.json

@@ -1,15 +0,0 @@
-{
-    // See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.
-    // Extension identifier format: ${publisher}.${name}. Example: vscode.csharp
-
-    // List of extensions which should be recommended for users of this workspace.
-    "recommendations": [
-        "llvm-vs-code-extensions.vscode-clangd",
-        "ms-vscode.cpptools-extension-pack",
-        "Seaube.clangformat"
-    ],
-    // List of extensions recommended by VS Code that should not be recommended for users of this workspace.
-    "unwantedRecommendations": [
-
-    ]
-}

fvdb/.vscode/settings.json

@@ -1,58 +0,0 @@
-{
-    "files.associations": {
-        "*.cu": "cuda-cpp",
-        "*.cuh": "cuda-cpp"
-    },
-    "files.trimTrailingWhitespace": true,
-    "files.insertFinalNewline": true,
-    "editor.rulers": [ 100 ],
-    "C_Cpp.intelliSenseEngine": "disabled",
-    "C_Cpp.enhancedColorization": "enabled",
-    "C_Cpp.errorSquiggles": "enabledIfIncludesResolve",
-    "C_Cpp.autocomplete": "default",
-    "C_Cpp.default.compilerPath": "${env:CONDA_PREFIX}/envs/fvdb/bin/x86_64-conda-linux-gnu-c++",
-    "terminal.integrated.defaultLocation": "editor",
-    "cmake.environment": {
-        "PATH": "${env:CONDA_PREFIX}/envs/fvdb/bin:${env:PATH}"
-    },
-    "cmake.configureOnOpen": false,
-    "C_Cpp.formatting": "clangFormat",
-    "C_Cpp.clang_format_path": "${env:CONDA_PREFIX}/envs/fvdb/bin/clang-format-18",
-    "C_Cpp.autoAddFileAssociations": false,
-
-    "[cpp]": {
-        "editor.defaultFormatter": "seaube.clangformat",
-        "editor.formatOnSave": true
-    },
-    "[cuda-cpp]": {
-        "editor.defaultFormatter": "seaube.clangformat",
-        "editor.formatOnSave": true
-    },
-    "[python]": {
-        "editor.defaultFormatter": "ms-python.black-formatter",
-        "editor.formatOnSave": true,
-        "editor.codeActionsOnSave": {
-            "source.organizeImports": "explicit"
-        },
-    },
-    "python.analysis.typeCheckingMode": "basic",
-    "python.testing.unittestArgs": [
-        "-v", "-s", "."
-    ],
-    "python.testing.pytestEnabled": false,
-    "python.testing.unittestEnabled": true,
-    "black-formatter.args": [
-        "--target-version=py311",
-        "--line-length=120"
-    ],
-    "python.analysis.diagnosticSeverityOverrides": {
-        "reportPrivateImportUsage": "none",
-    },
-    "isort.args": [
-        "--profile", "black"
-    ],
-    "json.format.keepLines": true,
-
-    "clangd.path": "${env:CONDA_PREFIX}/envs/fvdb/bin/clangd",
-    "clangFormat.executable.linux": "${env.CONDA_PREFIX}/envs/fvdb/bin/clang-format",
-}

fvdb/CMakeLists.txt

@@ -1,98 +0,0 @@
-# Copyright Contributors to the OpenVDB Project
-# SPDX-License-Identifier: Apache-2.0
-
-cmake_minimum_required(VERSION 3.25 FATAL_ERROR)
-
-# Set global download timeout to 600 seconds (10 minutes)
-set(CMAKE_DOWNLOAD_TIMEOUT 600 CACHE STRING "Time allowed for downloads in seconds")
-
-project(${SKBUILD_PROJECT_NAME} VERSION ${SKBUILD_PROJECT_VERSION} LANGUAGES CXX)
-
-find_package(Python3 COMPONENTS Development Interpreter)
-
-message(STATUS "CMAKE_BUILD_PARALLEL_LEVEL: ${CMAKE_BUILD_PARALLEL_LEVEL}")
-
-include(${CMAKE_CURRENT_SOURCE_DIR}/src/cmake/get_cpm.cmake)
-include(${CMAKE_CURRENT_SOURCE_DIR}/src/cmake/get_nvtx.cmake)
-include(${CMAKE_CURRENT_SOURCE_DIR}/src/cmake/get_torch.cmake)
-include(${CMAKE_CURRENT_SOURCE_DIR}/src/cmake/get_pybind11.cmake)
-include(${CMAKE_CURRENT_SOURCE_DIR}/src/cmake/configure_torch_pybind11.cmake)
-
-# Generate compile_commands.json
-set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
-
-# configure libfvdb
-add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/src/)
-
-# Source files
-set(FVDB_BINDINGS_CPP_FILES
-    src/python/Bindings.cpp
-    src/python/GaussianSplatBinding.cpp
-    src/python/GridBatchBinding.cpp
-    src/python/JaggedTensorBinding.cpp)
-
-# Build library
-Python3_add_library(_Cpp ${FVDB_BINDINGS_CPP_FILES})
-if (DEFINED TORCH_PYBIND11_INCLUDE_DIR)
-    target_link_libraries(_Cpp PUBLIC torch_pybind11_headers)
-else()
-    target_link_libraries(_Cpp PUBLIC pybind11::headers)
-endif()
-set_target_properties(_Cpp PROPERTIES
-                                INTERPROCEDURAL_OPTIMIZATION ON
-                                CXX_VISIBILITY_PRESET hidden
-                                VISIBILITY_INLINES_HIDDEN ON)
-
-target_link_options(_Cpp PRIVATE "-Wl,--no-as-needed")
-
-set_target_properties(_Cpp PROPERTIES
-    BUILD_RPATH "\$ORIGIN"
-    INSTALL_RPATH "\$ORIGIN"
-    INSTALL_RPATH_USE_LINK_PATH FALSE
-    BUILD_WITH_INSTALL_RPATH TRUE
-    CXX_STANDARD 20
-    CXX_STANDARD_REQUIRED ON
-    CXX_EXTENSIONS ON
-    POSITION_INDEPENDENT_CODE ON
-    INTERFACE_POSITION_INDEPENDENT_CODE ON)
-
-target_include_directories(_Cpp PUBLIC
-    ${CMAKE_CURRENT_SOURCE_DIR}/src
-    ${TORCH_INCLUDE_DIRS})
-
-target_link_libraries(_Cpp PRIVATE
-    ${TORCH_PYTHON_LIBRARY}
-    ${TORCH_LIBRARIES}
-    fvdb)
-
-target_compile_options(_Cpp PRIVATE
-    $<$<COMPILE_LANGUAGE:CXX>:
-    #"-Wno-unused-variable"
-    "-fvisibility=hidden"
-    "-fvisibility-inlines-hidden"
-    "-Wall"
-    "-Werror"
-    "${TORCH_CXX_FLAGS}"
-    >)
-
-target_compile_definitions(_Cpp PRIVATE
-    TORCH_EXTENSION_NAME=_Cpp
-    TORCH_API_INCLUDE_EXTENSION_H)
-
-# Configure the pybind11 module with PyTorch compatibility settings
-configure_torch_pybind11(_Cpp)
-
-install(TARGETS _Cpp fvdb
-    LIBRARY
-    DESTINATION fvdb
-    COMPONENT PythonModule
-    RUNTIME
-    DESTINATION fvdb
-    COMPONENT PythonModule)
-
-# Add at the beginning after project() call:
-set(VERSION_PY_PATH "${CMAKE_CURRENT_SOURCE_DIR}/fvdb/version.py")
-configure_file("${CMAKE_CURRENT_SOURCE_DIR}/fvdb/version.py.in" "${VERSION_PY_PATH}" @ONLY)
-
-# Make sure version.py is included in the installation
-install(FILES "${VERSION_PY_PATH}" DESTINATION fvdb)

fvdb/Dockerfile

@@ -1,19 +0,0 @@
-FROM condaforge/miniforge3:24.11.3-2
-
-ARG MODE=dev
-RUN echo "Building fVDB container in $MODE mode"
-
-# used for cross-compilation in docker build
-ENV FORCE_CUDA=1
-
-WORKDIR /openvdb
-
-# force this CUDA version to be used to build the docker container because `docker build` does not
-# expose the GPU to the docker build process for it to be detected
-ENV CONDA_OVERRIDE_CUDA=12.0
-# copy env/dev_environment.yml to /tmp/
-COPY fvdb/env/dev_environment.yml /tmp/
-RUN  conda env create -f /tmp/dev_environment.yml
-
-RUN conda init
-RUN echo "conda activate fvdb" >> ~/.bashrc

fvdb/README.md

@@ -1,244 +0,0 @@
-# *ƒ*(VDB)
-
-
-This repository contains the code for *f*VDB, a data structure for encoding and operating on *sparse voxel hierarchies* of features in PyTorch. A sparse voxel hierarchy is a coarse-to-fine hierarchy of sparse voxel grids such that every fine voxel is contained within some coarse voxel. The image below illustrates an example. *f*VDB supports using PyTorch Tensors to represent features at the corners and centers of voxels in a hierarchy and enables a number of differentiable operations on these Tensors (*e.g.* trilinear interpolation, convolution, splatting, ray tracing).
-
-<p align="center">
-  <img src="docs/imgs/fvdb_teaser.png" style="width: 40%;"alt="fVDB Teaser">
-  <!-- <img src="docs/imgs/readme/av_screenshot.png" style="width: 100%;"alt="fVDB Teaser"> -->
-  <figcaption style="text-align: center; font-style: italic;">An example of a sparse voxel hierarchy with 3 levels. Each fine voxel is contained within exactly one coarse voxel.</figcaption>
-</p>
-
-## Learning to Use *f*VDB
-
-After [installing *f*VDB](#installing-fvdb), we recommend starting with our walk-through [notebooks](notebooks) which provide a gentle, illustrated introduction to the main concepts and operations in *f*VDB.
-
-Once familiar with the basics, [Usage Examples](#usage-examples) introduces a few of the practical python scripts that can be further explored in the [examples](examples) directory.
-
-Lastly, our [documentation](docs) provides deeper details on the concepts as well as an exhaustive set of illustrations of all the operations available in *f*VDB and an API reference. The [documentation can be built locally](#building-documentation) or can be accessed online at https://www.openvdb.org/documentation/fvdb/.
-
-## Installing *f*VDB
-
-During the project's initial development stages, it is necessary to [run the build steps](#building-fvdb-from-source) to install ƒVDB. Eventually, ƒVDB will be provided as a pre-built, installable package from anaconda.  We support building the latest ƒVDB version for the following dependent library configurations:
-
-|   PyTorch      | Python      | CUDA |
-| -------------- | ----------- | ------------ |
-|  2.4.0-2.4.1   | 3.10 - 3.12 | 12.1 - 12.4 |
-
-
-
-** Notes:**
-* Linux is the only platform currently supported (Ubuntu >= 20.04 recommended).
-* A CUDA-capable GPU with Ampere architecture or newer (i.e. compute capability >=8.0) is recommended to run the CUDA-accelerated operations in ƒVDB.  A GPU with compute capabililty >=7.0 (Volta architecture) is the minimum requirement but some operations and data types are not supported.
-
-
-## Building *f*VDB from Source
-
-### Environment Management
-ƒVDB is a Python library implemented as a C++ Pytorch extension.  Of course you can build ƒVDB in whatever environment suits you, but we provide three paths to constructing reliable environments for building and running ƒVDB:  using [docker](#setting-up-a-docker-container), [conda](#setting-up-a-conda-environment), or a Python virtual environment.
-
-`conda` tends to be more flexible since reconfiguring toolchains and modules to suit your larger project can be dynamic, but at the same time this can be a more brittle experience compared to using a virtualized `docker` container.  Using `conda` is generally recommended for development and testing, while using `docker` is recommended for CI/CD and deployment.
-
-#### Setting up a Docker Container
-
-Running a docker container is a great way to ensure that you have a consistent environment for building and running ƒVDB.
-
-Our provided [`Dockerfile`](Dockerfile) constructs a Docker image which is ready to build ƒVDB.  The docker image is configured to install miniforge and the `fvdb` conda environment with all the dependencies needed to build and run ƒVDB.
-
-Building and starting the docker image is done by running the following command from the fvdb directory:
-```shell
-docker compose run --rm fvdb-dev
-```
-
-
-When you are ready to build ƒVDB, run the following command within the docker container.  `TORCH_CUDA_ARCH_LIST` specifies which CUDA architectures to build for.
-```shell
-conda activate fvdb;
-cd /openvdb/fvdb;
-TORCH_CUDA_ARCH_LIST="7.0;7.5;8.0;8.6+PTX" \
-./build.sh install
-```
-
-Additional information about the ƒVDB docker setup, with troubleshooting for common errors, can be found
-here: [`ƒVDB Docker`](docs/markdown/docker_readme.md)
-
-#### Setting up a Conda Environment
-
-*f*VDB can be used with any Conda distribution installed on your system. Below is an installation guide using
-[miniforge](https://github.com/conda-forge/miniforge). You can skip steps 1-3 if you already have a Conda installation.
-
-1. Download and Run Install Script. Copy the command below to download and run the [miniforge install script](https://github.com/conda-forge/miniforge?tab=readme-ov-file#unix-like-platforms-macos--linux):
-
-```shell
-curl -L -O "https://github.com/conda-forge/miniforge/releases/latest/download/Miniforge3-$(uname)-$(uname -m).sh"
-bash Miniforge3-$(uname)-$(uname -m).sh
-```
-
-2. Follow the prompts to customize Conda and run the install. Note, we recommend saying yes to enable `conda-init`.
-
-3. Start Conda. Open a new terminal window, which should now show Conda initialized to the `(base)` environment.
-
-4. Create the `fvdb` conda environment. Run the following command from the directory containing this README:
-
-```shell
-conda env create -f env/dev_environment.yml
-```
-
-5. Activate the *f*VDB environment:
-
-```shell
-conda activate fvdb
-```
-
-##### Other available environments
-* `fvdb_build`: Use `env/build_environment.yml` for a minimum set of dependencies needed just to build/package *f*VDB (note this environment won't have all the runtime dependencies needed to `import fvdb`).
-* `fvdb_test`: Use `env/test_environment.yml` for a runtime environment which has only the packages required to run the unit tests after building ƒVDB. This is the environment used by the CI pipeline to run the tests after building ƒVDB in the `fvdb_build` environment.
-* `fvdb_learn`: Use `env/learn_environment.yml` for additional runtime requirements and packages needed to run the [notebooks](notebooks) or [examples](examples) and view their visualizations.
-
-#### Setting up a Python virtual environment
-
-After creating a Python virtual environment, proceed to install the exact version of PyTorch that corresponds to your CUDA version. Then, install the rest of the build requirements.
-
-```shell
-python -m venv fvdb
-source fvdb/bin/activate
-pip install torch==2.6.0 torchvision==0.21.0 torchaudio==2.6.0 --index-url https://download.pytorch.org/whl/cu126
-pip install -r env/build_requirements.txt
-```
-
-When you're ready to build fVDB, run the following command after activating the Python virtual environment
-```shell
-TORCH_CUDA_ARCH_LIST="7.0;7.5;8.0;8.6+PTX" ./build.sh install
-```
-
-### Building *f*VDB
-
-**:warning: Note:** Compilation can be very memory-consuming. As part of our build script, we set the `CMAKE_BUILD_PARALLEL_LEVEL` environment variable to control compilation job parallelism with a value that we find works well for most machines (allowing for one job every 2.5GB of memory) but this can be overridden by setting the `CMAKE_BUILD_PARALLEL_LEVEL` environment variable to a different value.
-
-
-You can either perform an install:
-```shell
-./build.sh
-```
-
-or if you would like to build a packaged wheel for installing in other environments, you can run the following command:
-```shell
-./build.sh wheel
-```
-
-
-### Running Tests
-
-To make sure that everything works by running tests:
-```shell
-cd tests
-pytest unit
-```
-
-### Building Documentation
-
-To build the documentation, simply run:
-```shell
-python setup.py build_ext --inplace
-sphinx-build -E -a docs/ build/sphinx
-# View the docs
-open build/sphinx/index.html
-```
-
-### Setting up Intellisense with clangd in Visual Studio Code
-
-Please see the guide [`Clangd for Intellisense in fVDB`](docs/markdown/clangd.md)
-
-
-## Usage Examples
-The [examples](examples) directory contains a number of useful illustrations using the `fvdb` Python package. The sections below show some notable examples and their outputs. Run all commands from the directory containing this README.
-
-### Trilinear sampling of grids
-```
-python examples/sample_trilinear.py
-```
-This script generates a grid with scalars at the corners of each voxel and samples this grid at points. The visualization below shows the points colored according to their sampled values as well as the values at grid corners.
-<p align="center">
-  <img src="docs/imgs/readme/trilerp.png" style="width: 40%;"alt="fVDB trilinear interpolation demo">
-  <figcaption style="text-align: center; font-style: italic;">Trilinearly interpolate the corner values at the points.</figcaption>
-</p>
-
-
-### Trilinear splatting into grids
-```
-python examples/splat_trilinear.py
-```
-This script splats normals of a point cloud onto grid centers. The green arrows represent the values of the normals splatted onto each grid center
-<p align="center">
-  <img src="docs/imgs/readme/splat.png" style="width: 40%;"alt="fVDB trilinear splatting demo">
-  <figcaption style="text-align: center; font-style: italic;">Splat the normals at the blue points into the center of each grid cell. The green arrows are the splatted normals</figcaption>
-</p>
-
-
-### Tracing voxels along rays (hierarchical DDA)
-```
-python examples/ray_voxel_marching.py
-```
-This script demonstrates finding the first `N` voxels which lie along a ray (returning thier index as well as their entry and exit points).
-<p align="center">
-  <img src="docs/imgs/readme/rayvox.png" style="width: 70%;"alt="fVDB ray voxel marching">
-  <figcaption style="text-align: center; font-style: italic;">Find the voxels (yellow) which intersect the pink rays eminating from the green dot.</figcaption>
-</p>
-
-
-### Tracing contiguous segments along rays
-```
-python examples/ray_segment_marching.py
-```
-This script demonstrates finding the first `N` continuous segments of voxels which lie along a ray (returning thier index as well as their entry and exit points).
-<p align="center">
-  <img src="docs/imgs/readme/rayseg.png" style="width: 70%;"alt="fVDB ray voxel marching">
-  <figcaption style="text-align: center; font-style: italic;">Find the contiguous segments of voxels (red and blue lines) which intersect the cyan rays eminating from the pink dot.</figcaption>
-</p>
-
-
-### Backpropagating through sampling and splatting
-```
-python examples/overfit_sdf.py
-```
-This scripts fits SDF values at a grid corner to the SDF of a mesh using gradient descent.
-<p align="center">
-  <img src="docs/imgs/readme/fitsdf.png" style="width: 70%;"alt="fVDB SDF fitting">
-  <figcaption style="text-align: center; font-style: italic;">SDF values at grid corners (colored dots) fitted using gradient descent to the SDF of a mesh.</figcaption>
-</p>
-
-The following scripts also show how to bakcprop through splatting and sampling with fVDB:
-```
-python scripts/debug_grad_trilerp.py
-```
-```
-python scripts/debug_grad_splat.py
-```
-
-## Code Structure
-The main source code for fVDB lives in the [src](src) directory. There are several important files here:
-* `src/python/Bindings.cpp` exposes functionality directly to Python. It is mainly a wrapper around the core classes such as `fvdb::GridBatch` and `fvdb::JaggedTensor`.
-* `src/GridBatch.h` contains the implementation of `fvdb::GridBatch` which is the core data structure on which fVDB is built. A `GridBatch` acts as a map between `(i, j, k)` integer coordinates and offsets in linear memory. This mapping can be used to perform a host of operations. The methods in this class are mostly lightweight wrappers around a set of CPU and CUDA *kernels*. The function prototypes for these kernels are defined in `src/detail/ops/Ops.h`.
-* `src/detail/ops/Ops.h` contains the function prototypes for the main kernels used by fVDB. Host and device kernel implementations are provided in the `src/detail/ops/*.cu` source files.
-* `src/detail/autograd` contains C++ implementations of PyTorch autograd functions for differentiable operations.  `#include <detail/autograd/Autograd.h>` includes all of the functions in this directory.
-* `src/detail/utils/nanovdb` contains a number of utilities which make it easier to use NanoVDB.
-
-
-## References
-
-Please consider citing this when using *f*VDB in a project. You can use the citation BibTeX:
-
-```bibtex
-@article{williams2024fvdb,
-  title={fVDB: A Deep-Learning Framework for Sparse, Large-Scale, and High-Performance Spatial Intelligence},
-  author={Williams, Francis and Huang, Jiahui and Swartz, Jonathan and Klar, Gergely and Thakkar, Vijay and Cong, Matthew and Ren, Xuanchi and Li, Ruilong and Fuji-Tsang, Clement and Fidler, Sanja and Sifakis, Eftychios and Museth, Ken},
-  journal={ACM Transactions on Graphics (TOG)},
-  volume={43},
-  number={4},
-  pages={133:1--133:15},
-  year={2024},
-  publisher={ACM New York, NY, USA}
-}
-```
-
-## Contact

fvdb/build.sh

@@ -1,195 +0,0 @@
-#!/bin/bash
-# Copyright Contributors to the OpenVDB Project
-# SPDX-License-Identifier: Apache-2.0
-
-usage() {
-  echo "Usage: $0 [-h|--help] [build_type] [options...]"
-  echo ""
-  echo "Builds or tests FVDB."
-  echo ""
-  echo "Arguments:"
-  echo "  build_type     Specifies the build operation. Can be one of:"
-  echo "                   install    - Build and install the package (default)."
-  echo "                   wheel      - Build the Python wheel."
-  echo "                   ctest      - Run tests (requires tests to be built)."
-  echo "                   debug      - Build in debug mode with full debug symbols and no optimizations."
-  echo ""
-  echo "Options:"
-  echo "  -h, --help     Display this help message and exit."
-  echo ""
-  echo "Build Modifiers (for 'install' and 'wheel' build types, typically passed after build_type):"
-  echo "  gtests         Enable building tests (sets FVDB_BUILD_TESTS=ON)."
-  echo "  benchmarks     Enable building benchmarks (sets FVDB_BUILD_BENCHMARKS=ON)."
-  echo "  verbose        Enable verbose build output for pip and CMake."
-  echo ""
-  echo "  Any modifier arguments not matching above are passed through to pip."
-  exit 0
-}
-
-setup_parallel_build_jobs() {
-  # Calculate the optimal number of parallel build jobs based on available RAM
-  RAM_GB=$(free -g | awk '/^Mem:/{print $4}')
-  if [ -z "$RAM_GB" ]; then
-      echo "Error: Unable to determine available RAM"
-      exit 1
-  fi
-  JOB_RAM_GB=2.5
-
-  # Calculate max jobs based on RAM
-  RAM_JOBS=$(awk -v ram="$RAM_GB" -v job_ram="$JOB_RAM_GB" 'BEGIN { print int(ram / job_ram) }')
-
-  # Get number of processors
-  NPROC=$(nproc)
-
-  # if CMAKE_BUILD_PARALLEL_LEVEL is set, use that
-  if [ -n "$CMAKE_BUILD_PARALLEL_LEVEL" ]; then
-    echo "Using CMAKE_BUILD_PARALLEL_LEVEL=$CMAKE_BUILD_PARALLEL_LEVEL"
-  else
-    # Determine the minimum of RAM-based jobs and processor count
-    if [ "$RAM_JOBS" -lt "$NPROC" ]; then
-      CMAKE_BUILD_PARALLEL_LEVEL="$RAM_JOBS"
-    else
-      CMAKE_BUILD_PARALLEL_LEVEL="$NPROC"
-    fi
-
-    # Ensure at least 1 job
-    if [ "$CMAKE_BUILD_PARALLEL_LEVEL" -lt 1 ]; then
-      CMAKE_BUILD_PARALLEL_LEVEL=1
-    fi
-
-    echo "Setting CMAKE_BUILD_PARALLEL_LEVEL to $CMAKE_BUILD_PARALLEL_LEVEL based on available RAM to target $JOB_RAM_GB GB per translation unit"
-    export CMAKE_BUILD_PARALLEL_LEVEL
-  fi
-}
-
-if [[ "$1" == "-h" || "$1" == "--help" ]]; then
-  usage
-fi
-
-# Determine BUILD_TYPE from the first positional argument, default to 'install'.
-# Handle shifting of arguments appropriately.
-_first_arg_val="$1"
-BUILD_TYPE="install" # Default build type
-
-if [[ -n "$_first_arg_val" ]]; then
-  if [[ "$_first_arg_val" == "install" || "$_first_arg_val" == "wheel" || "$_first_arg_val" == "ctest" ]]; then
-    BUILD_TYPE="$_first_arg_val"
-    shift # Consume the build_type argument
-  else
-    # _first_arg_val is not a recognized build type. Print usage and exit.
-    echo "Error: Argument '$_first_arg_val' is not a recognized build_type."
-    usage # This will also exit
-  fi
-fi
-
-CONFIG_SETTINGS=""
-PASS_THROUGH_ARGS=""
-
-while (( "$#" )); do
-  is_config_arg_handled=false
-  if [[ "$BUILD_TYPE" == "install" || "$BUILD_TYPE" == "wheel" ]]; then
-    if [[ "$1" == "gtests" ]]; then
-      echo "Detected 'gtests' flag for $BUILD_TYPE build. Enabling FVDB_BUILD_TESTS."
-      CONFIG_SETTINGS+=" --config-settings=cmake.define.FVDB_BUILD_TESTS=ON"
-      is_config_arg_handled=true
-    elif [[ "$1" == "benchmarks" ]]; then
-      echo "Detected 'benchmarks' flag for $BUILD_TYPE build. Enabling FVDB_BUILD_BENCHMARKS."
-      CONFIG_SETTINGS+=" --config-settings=cmake.define.FVDB_BUILD_BENCHMARKS=ON"
-      is_config_arg_handled=true
-    elif [[ "$1" == "verbose" ]]; then
-      echo "Enabling verbose build"
-      CONFIG_SETTINGS+=" -v -C build.verbose=true"
-      is_config_arg_handled=true
-    elif [[ "$1" == "debug" ]]; then
-      echo "Enabling debug build"
-      CONFIG_SETTINGS+=" --config-settings=cmake.build-type=debug"
-      is_config_arg_handled=true
-    fi
-  fi
-
-  if ! $is_config_arg_handled; then
-    # Append other arguments, handling potential spaces safely
-    PASS_THROUGH_ARGS+=" $(printf "%q" "$1")"
-  fi
-  shift
-done
-
-# Construct PIP_ARGS with potential CMake args and other pass-through args
-export PIP_ARGS="--no-build-isolation$CONFIG_SETTINGS$PASS_THROUGH_ARGS"
-
-if [ "$BUILD_TYPE" != "ctest" ]; then
-    setup_parallel_build_jobs
-fi
-
-# if the user specified 'wheel' as the build type, then we will build the wheel
-if [ "$BUILD_TYPE" == "wheel" ]; then
-    echo "Build wheel"
-    echo "pip wheel . --wheel-dir dist/ $PIP_ARGS"
-    pip wheel . --wheel-dir dist/ $PIP_ARGS
-elif [ "$BUILD_TYPE" == "install" ]; then
-    echo "Build and install package"
-    echo "pip install --force-reinstall $PIP_ARGS ."
-    pip install --force-reinstall $PIP_ARGS .
-# TODO: Fix editable install
-# else
-#     echo "Build and install editable package"
-#     echo "pip install $PIP_ARGS -e .  "
-#     pip install $PIP_ARGS -e .
-elif [ "$BUILD_TYPE" == "ctest" ]; then
-
-    # --- Ensure Test Data is Cached via CMake Configure Step ---
-    echo "Ensuring test data is available in CPM cache..."
-
-    if [ -z "$CPM_SOURCE_CACHE" ]; then
-         echo "CPM_SOURCE_CACHE is not set"
-    else
-        echo "Using CPM_SOURCE_CACHE: $CPM_SOURCE_CACHE"
-    fi
-
-    # Assume this script runs from the source root directory
-    SOURCE_DIR=$(pwd)
-    TEMP_BUILD_DIR="build_temp_download_data"
-
-    # Clean up previous temp dir and create anew
-    rm -rf "$TEMP_BUILD_DIR"
-    mkdir "$TEMP_BUILD_DIR"
-
-    echo "Running CMake configure in temporary directory ($TEMP_BUILD_DIR) to trigger data download..."
-    pushd "$TEMP_BUILD_DIR" > /dev/null
-    cmake "$SOURCE_DIR/src/cmake/download_test_data"
-    popd > /dev/null # Back to SOURCE_DIR
-
-    # Clean up temporary directory
-    rm -rf "$TEMP_BUILD_DIR"
-    echo "Test data caching step finished."
-    # --- End Test Data Caching ---
-
-    # --- Find and Run Tests ---
-    echo "Searching for test build directory..."
-    # Find the directory containing the compiled tests (adjust if needed)
-    # Using -print -quit to stop after the first match for efficiency
-    BUILD_DIR=$(find build -name tests -type d -print -quit)
-
-    if [ -z "$BUILD_DIR" ]; then
-        echo "Error: Could not find build directory with tests"
-        echo "Please enable tests by building with pip argument"
-        echo "-C cmake.define.FVDB_BUILD_TESTS=ON"
-        exit 1
-    fi
-    echo "Found test build directory: $BUILD_DIR"
-
-    # Run ctest within the test build directory
-    pushd "$BUILD_DIR" > /dev/null
-    echo "Running ctest..."
-    ctest --output-on-failure
-    CTEST_EXIT_CODE=$?
-    popd > /dev/null # Back to SOURCE_DIR
-
-    echo "ctest finished with exit code $CTEST_EXIT_CODE."
-    exit $CTEST_EXIT_CODE
-
-else
-    echo "Invalid build/run type: $BUILD_TYPE"
-    echo "Valid build/run types are: wheel, install, ctest"
-    exit 1
-fi

fvdb/docker-compose.yml

@@ -1,25 +0,0 @@
-version: '3'
-services:
-  fvdb-dev:
-    build:
-      context: ../
-      dockerfile: fvdb/Dockerfile
-      args:
-        MODE: dev
-    volumes:
-      - ../:/openvdb
-    # Uncomment and adjust the following as needed
-    # ports:
-    #   - "8888:8888"  # Example for Jupyter notebook
-    entrypoint: /bin/bash
-    stdin_open: true
-    tty: true
-    environment:
-      - NVIDIA_VISIBLE_DEVICES=all
-    deploy:
-      resources:
-        reservations:
-          devices:
-            - driver: nvidia
-              count: all
-              capabilities: [gpu]

fvdb/docs/api/grid_batch.rst

@@ -1,5 +0,0 @@
-GridBatch
-===============
-
-.. autoclass:: fvdb.GridBatch
-   :members:

fvdb/docs/api/jagged_tensor.rst

@@ -1,5 +0,0 @@
-JaggedTensor
-===============
-
-.. autoclass:: fvdb.JaggedTensor
-   :members:

fvdb/docs/api/nn.rst

@@ -1,20 +0,0 @@
-fvdb.nn
-=======
-
-`fvdb.nn` is a collection of neural network layers to build sparse neural networks.
-
-.. autoclass:: fvdb.nn.VDBTensor
-.. autoclass:: fvdb.nn.MaxPool
-.. autoclass:: fvdb.nn.AvgPool
-.. autoclass:: fvdb.nn.UpsamplingNearest
-.. autoclass:: fvdb.nn.FillFromGrid
-.. autoclass:: fvdb.nn.SparseConv3d
-.. autoclass:: fvdb.nn.GroupNorm
-.. autoclass:: fvdb.nn.Linear
-.. autoclass:: fvdb.nn.ReLU
-.. autoclass:: fvdb.nn.LeakyReLU
-.. autoclass:: fvdb.nn.SELU
-.. autoclass:: fvdb.nn.SiLU
-.. autoclass:: fvdb.nn.Tanh
-.. autoclass:: fvdb.nn.Sigmoid
-.. autoclass:: fvdb.nn.Dropout

fvdb/docs/api/utils.rst

@@ -1,4 +0,0 @@
-fvdb.utils
-==================
-
-.. autofunction:: fvdb.utils.build_ext.FVDBExtension

fvdb/docs/conf.py

@@ -1,91 +0,0 @@
-# Copyright Contributors to the OpenVDB Project
-# SPDX-License-Identifier: Apache-2.0
-#
-# -- Path setup --------------------------------------------------------------
-
-# If extensions (or modules to document with autodoc) are in another directory,
-# add these directories to sys.path here. If the directory is relative to the
-# documentation root, use os.path.abspath to make it absolute, like shown here.
-
-import os
-import sys
-
-sys.path.insert(0, os.path.abspath(".."))
-
-
-# -- Project information -----------------------------------------------------
-
-project = "fVDB"
-copyright = "Contributors to the OpenVDB Project"
-author = "Contributors to the OpenVDB Project"
-
-
-# -- General configuration ---------------------------------------------------
-
-# Add any Sphinx extension module names here, as strings. They can be
-# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
-# ones.
-extensions = ["sphinx.ext.autodoc", "sphinx.ext.viewcode", "sphinx.ext.napoleon", "myst_parser"]
-
-myst_enable_extensions = [
-    "amsmath",
-    "attrs_inline",
-    "colon_fence",
-    "deflist",
-    "dollarmath",
-    "fieldlist",
-    "html_admonition",
-    "html_image",
-    "linkify",
-    "replacements",
-    "smartquotes",
-    "strikethrough",
-    "substitution",
-    "tasklist",
-]
-
-# Fix return-type in google-style docstrings
-napoleon_custom_sections = [("Returns", "params_style")]
-
-# Add any paths that contain templates here, relative to this directory.
-templates_path = ["_templates"]
-
-source_suffix = [".rst", ".md"]
-
-# List of patterns, relative to source directory, that match files and
-# directories to ignore when looking for source files.
-# This pattern also affects html_static_path and html_extra_path.
-exclude_patterns = ["_build", "Thumbs.db", ".DS_Store"]
-
-autodoc_default_options = {"undoc-members": "forward, extra_repr"}
-
-# -- Options for HTML output -------------------------------------------------
-
-# The theme to use for HTML and HTML Help pages.  See the documentation for
-# a list of builtin themes.
-#
-html_theme = "sphinx_rtd_theme"
-
-# Add any paths that contain custom static files (such as style sheets) here,
-# relative to this directory. They are copied after the builtin static files,
-# so a file named "default.css" will overwrite the builtin "default.css".
-# html_static_path = ['imgs']
-
-
-# -- Custom hooks ------------------------------------------------------------
-
-
-def process_signature(app, what, name, obj, options, signature, return_annotation):
-    if signature is not None:
-        signature = signature.replace("._Cpp", "")
-        signature = signature.replace("fvdb::", "fvdb.")
-
-    if return_annotation is not None:
-        return_annotation = return_annotation.replace("._Cpp", "")
-        return_annotation = return_annotation.replace("fvdb::", "fvdb.")
-
-    return signature, return_annotation
-
-
-def setup(app):
-    app.connect("autodoc-process-signature", process_signature)