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fix: build and select cu13.2 prebuilt wheels #2618

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Merged
ko3n1g merged 2 commits into from
Jun 9, 2026
Merged

fix: build and select cu13.2 prebuilt wheels #2618

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a64ed3d
ci: use 1 ninja job for cu13.2
ko3n1g Jun 2, 2026
862e1fc
fix(setup): request cu13 prebuilt wheels for CUDA 13 torch
ko3n1g Jun 2, 2026
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2 changes: 1 addition & 1 deletion .github/workflows/_build.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -168,7 +168,7 @@ jobs:
# Limit MAX_JOBS otherwise the github runner goes OOM
# nvcc 11.8 can compile with 2 jobs, but nvcc 12.3 goes OOM

export MAX_JOBS=$([ "$MATRIX_CUDA_VERSION" == "129" ] || [ "$MATRIX_CUDA_VERSION" == "130" ] && echo 1 || echo 2)
export MAX_JOBS=$([ "$MATRIX_CUDA_VERSION" == "129" ] || [ "$MATRIX_CUDA_VERSION" == "130" ] || [ "$MATRIX_CUDA_VERSION" == "132" ] && echo 1 || echo 2)
export NVCC_THREADS=2
export FLASH_ATTENTION_FORCE_BUILD="TRUE"
export FLASH_ATTENTION_FORCE_CXX11_ABI=${{ inputs.cxx11_abi }}
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9 changes: 7 additions & 2 deletions setup.py
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Expand Up @@ -562,9 +562,14 @@ def get_wheel_url():
# We're using the CUDA version used to build torch, not the one currently installed
# _, cuda_version_raw = get_cuda_bare_metal_version(CUDA_HOME)
torch_cuda_version = parse(torch.version.cuda)
# For CUDA 11, we only compile for CUDA 11.8, and for CUDA 12 we only compile for CUDA 12.3
# For CUDA 11 we compile for 11.8, for CUDA 12 for 12.3, and for CUDA 13 for 13.0
# to save CI time. Minor versions should be compatible.
torch_cuda_version = parse("11.8") if torch_cuda_version.major == 11 else parse("12.3")
if torch_cuda_version.major == 11:
torch_cuda_version = parse("11.8")
elif torch_cuda_version.major == 12:
torch_cuda_version = parse("12.3")
else:
torch_cuda_version = parse("13.0")
# cuda_version = f"{cuda_version_raw.major}{cuda_version_raw.minor}"
cuda_version = f"{torch_cuda_version.major}"

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