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Add Python 3.15 to the test matrix#2108

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Add Python 3.15 to the test matrix#2108
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mdboom:python-3.15

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@mdboom mdboom commented May 19, 2026

Add Python 3.15 to the test matrix (Linux x86 only for now) so that we are ready for any issues by October.

@github-actions github-actions Bot added the CI/CD CI/CD infrastructure label May 19, 2026
@mdboom mdboom self-assigned this May 19, 2026
@mdboom mdboom added cuda.bindings Everything related to the cuda.bindings module cuda.core Everything related to the cuda.core module cuda.pathfinder Everything related to the cuda.pathfinder module labels May 19, 2026
kkraus14
kkraus14 reviewed May 19, 2026
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Comment thread ci/test-matrix.yml Outdated
Comment on lines +39 to +40
- { ARCH: 'amd64', PY_VER: '3.15', CUDA_VER: '13.2.1', LOCAL_CTK: '1', GPU: 'l4', GPU_COUNT: '1', DRIVER: 'latest' }
- { ARCH: 'amd64', PY_VER: '3.15t', CUDA_VER: '13.2.1', LOCAL_CTK: '1', GPU: 'l4', GPU_COUNT: '1', DRIVER: 'latest' }
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It would be nice to not add additional jobs if possible where can we take existing jobs in the matrix and update their Python version without introducing coverage concerns?

@mdboom mdboom marked this pull request as draft May 19, 2026 17:41
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mdboom commented May 19, 2026

/ok to test

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mdboom commented May 19, 2026

/ok to test

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mdboom commented May 19, 2026

/ok to test

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leofang commented May 22, 2026

It seems we need to build PY315 in the 12.9.x branch first, so that we have a cuda-bindings 12.9.x wheel that we can use in the main branch (for building cuda-core).

https://github.com/NVIDIA/cuda-python/actions/runs/26123422715/job/76831314547?pr=2108#step:38:76

leofang added a commit that referenced this pull request May 22, 2026
@leofang
Add Python 3.15 to the build/test matrix
07b3ce4 
Backport of #2108 to the 12.9.x branch so that cuda-bindings 12.9.x
wheels are available for Python 3.15, which the main branch needs in
order to build cuda-core.

- Add 3.15 / 3.15t to the build matrix
- Upgrade cibuildwheel to v4.0.0rc1 (required for cpython-prerelease)
- Enable cpython-prerelease in CIBW_ENABLE
- Add amd64-only test entries for 3.15 / 3.15t (CUDA 12.9.1)
This was referenced May 22, 2026
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leofang commented May 31, 2026

It seems we need to build PY315 in the 12.9.x branch first, so that we have a cuda-bindings 12.9.x wheel that we can use in the main branch (for building cuda-core).

This is done in #2133. Need to merge it first and then apply the learnings there in this PR.

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