Add custom vendored kernels - #3154
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| name: Build wheel (${{ matrix.arch }}) | ||
| strategy: | ||
| fail-fast: false | ||
| matrix: | ||
| include: | ||
| - runner: image-builder | ||
| arch: x86_64 | ||
| - runner: image-builder-arm-2204 | ||
| arch: aarch64 | ||
| runs-on: ${{ matrix.runner }} | ||
| container: nvidia/cuda:12.8.1-devel-ubuntu24.04 | ||
| steps: | ||
| - name: Install build tooling | ||
| run: | | ||
| apt-get update | ||
| apt-get install -y --no-install-recommends git curl ca-certificates build-essential | ||
|
|
||
| # Kernel sources live in this repo, so the checkout is all the build needs. | ||
| - name: Checkout | ||
| uses: actions/checkout@v5 | ||
| with: | ||
| submodules: false | ||
| ref: ${{ inputs.ref }} | ||
|
|
||
| - name: Install uv | ||
| run: | | ||
| curl -LsSf https://astral.sh/uv/install.sh | env INSTALLER_NO_MODIFY_PATH=1 UV_INSTALL_DIR=/usr/local/bin sh | ||
| uv --version | ||
|
|
||
| # The wheel only imports under the exact torch it was compiled against, so build | ||
| # against the torch prime-rl resolves rather than whatever is newest today. | ||
| - name: Create build environment | ||
| env: | ||
| UV_TORCH_BACKEND: ${{ env.CUDA_TAG }} | ||
| run: | | ||
| TORCH_PIN=$(grep -A1 '^name = "torch"$' uv.lock | sed -n 's/^version = "\([^"+]*\).*"$/\1/p' | head -n1) | ||
| if [ -z "$TORCH_PIN" ]; then | ||
| echo "Could not read torch's version from uv.lock" >&2 | ||
| exit 1 | ||
| fi | ||
| echo "Building against torch==$TORCH_PIN" | ||
| uv venv --python 3.12 /tmp/build-env | ||
| VIRTUAL_ENV=/tmp/build-env uv pip install "torch==$TORCH_PIN" setuptools wheel ninja | ||
|
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| # torch C++ extensions are bound to the torch and CUDA they were compiled against, so | ||
| # the wheel carries both in its local version. | ||
| - name: Stamp ABI into the version | ||
| run: | | ||
| TORCH_VERSION=$(/tmp/build-env/bin/python -c 'import torch; print(torch.__version__.split("+")[0])') | ||
| LOCAL="${CUDA_TAG}torch${TORCH_VERSION}" | ||
| sed -i -E "s/^version = \"([^\"]+)\"$/version = \"\1+${LOCAL}\"/" kernels/pyproject.toml | ||
| grep '^version' kernels/pyproject.toml | ||
|
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||
| - name: Build wheel | ||
| env: | ||
| VIRTUAL_ENV: /tmp/build-env | ||
| CUDA_HOME: /usr/local/cuda | ||
| PRIME_KERNELS_REQUIRE: "1" | ||
| MAX_JOBS: "8" | ||
| run: uv build --wheel --no-build-isolation --out-dir dist kernels | ||
|
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| - name: Inspect wheel | ||
| run: | | ||
| ls -lh dist/ | ||
| /tmp/build-env/bin/python - <<'PY' | ||
| import pathlib, zipfile | ||
| wheel = next(pathlib.Path("dist").glob("*.whl")) | ||
| extensions = [n for n in zipfile.ZipFile(wheel).namelist() if n.endswith(".so")] | ||
| assert extensions, f"{wheel.name} contains no compiled kernels" | ||
| print(wheel.name, *extensions, sep="\n ") | ||
| PY | ||
|
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||
| - name: Upload artifact | ||
| uses: actions/upload-artifact@v4 | ||
| with: | ||
| name: prime-kernels-${{ matrix.arch }} | ||
| path: dist/*.whl | ||
| if-no-files-found: error | ||
|
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||
| - name: Attach to release | ||
| if: inputs.release_tag != '' | ||
| env: | ||
| GH_TOKEN: ${{ github.token }} | ||
| TAG: ${{ inputs.release_tag }} | ||
| run: | | ||
| gh release upload "$TAG" dist/*.whl --clobber | ||
| # The `[tool.uv.sources]` pin has to name the wheel exactly, ABI suffix and all. | ||
| WHEEL=$(basename dist/*.whl) | ||
| URL="https://github.com/${GITHUB_REPOSITORY}/releases/download/${TAG}/${WHEEL}" | ||
| echo "\`{ url = \"$URL\", marker = \"platform_machine == '${{ matrix.arch }}'\" },\`" >> "$GITHUB_STEP_SUMMARY" |
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Add support for locall vendored kernels