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Revert "[Deps] Use cu13 extra for nvidia cutlass dsl"#25935

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Revert "[Deps] Use cu13 extra for nvidia cutlass dsl"#25935
hnyls2002 wants to merge 2 commits into
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revert-25576-update-cutlass-dsl-cu13-4.5.1

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@hnyls2002 hnyls2002 commented May 21, 2026

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Reverts #25576


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Latest PR Test (Base): ❌ Run #26203071660
Latest PR Test (Extra): ❌ Run #26203071563

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@github-actions github-actions Bot added the dependencies Pull requests that update a dependency file label May 21, 2026
@hnyls2002 hnyls2002 added bypass-fastfail and removed dependencies Pull requests that update a dependency file labels May 21, 2026
@github-actions github-actions Bot added the dependencies Pull requests that update a dependency file label May 21, 2026
@hnyls2002 hnyls2002 closed this May 21, 2026
Kangyan-Zhou added a commit to Kangyan-Zhou/sglang that referenced this pull request May 21, 2026
Revert the version bump from PR sgl-project#25576. At 4.5.1, -libs-cu13's pybind11
binding changed to new MLIR-style ((operation: object)) without a
matching bump to the Python wrapper in nvidia-cutlass-dsl, exposing the
latent file-level conflict between -libs-base and -libs-cu13 (both
written by the additive [cu13] extra) as a hard GPUModuleOp TypeError
at kernel-compile time on CU13 runners.

At 4.5.0 both .so files expose a compatible binding, so the same
coexistence is silent and CI was empirically green on H100 and Blackwell
during the post-sgl-project#25756, pre-sgl-project#25576 window. Going back to 4.5.0 restores
that state.

Supersedes sgl-project#25935 (which proposed the same revert but was closed).
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