Remove deprecated torch.lstsq#70980
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lezcano
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Just left a small comment out of curiosity, but it LGTM
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| // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ legacy_lstsq ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | ||
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| std::tuple<Tensor, Tensor> legacy_lstsq_cuda(const Tensor &B, const Tensor &A) { |
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This seems a bit odd. Did we reimplement all the calling code for magmaGels within linalg_lstsq_cuda? I guess we did because of the TORCH_WARN_ONCE that's here, but that seems so odd.
lstsq is a mess, it could do with a reasonable clean-up.
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Porting of TH version of lstsq to ATen was done independently from implementing torch.linalg.lstsq.
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Fantastic to get rid of this code then (same applies to all the other PRs, but to this one in particular).
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@pytorchbot ciflow rerun |
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Hi @IvanYashchuk , Is this #71222 a known issue? |
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@de-gozaru , I have had some issues with the determinism of linalg.lstsq while working on its forward/backward ADs. If my memory serves me well, it was the case with only wide or tall matrices. |
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@pytorchbot merge -g |
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@pytorchbot merge |
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@pytorchbot merge -g |
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@kit1980 has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator. |
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@pytorchbot merge -g |
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I resolved the merge conflict. |
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@pytorchbot merge -g |
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@pytorchbot merge -f "Unrelated ROCm issue, tests passed previously" |
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Hey @IvanYashchuk. |
mehtanirav
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The time has come to remove deprecated linear algebra related functions. This PR removes `torch.lstsq`. There's a note in `tools/codegen/gen.py` about `lstsq` schema in `native_function.yaml` that I will not remove: https://github.com/pytorch/pytorch/blob/87139d8532c99ff5dbeef1b97948d71793aa7851/tools/codegen/gen.py#L734-L770 cc @jianyuh @nikitaved @pearu @mruberry @walterddr @IvanYashchuk @xwang233 @lezcano Pull Request resolved: #70980 Approved by: https://github.com/lezcano, https://github.com/kit1980
laurentdupin
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Apr 25, 2026
The time has come to remove deprecated linear algebra related functions. This PR removes `torch.lstsq`. There's a note in `tools/codegen/gen.py` about `lstsq` schema in `native_function.yaml` that I will not remove: https://github.com/pytorch/pytorch/blob/94576ee327a868ccd057e912923641489e862599/tools/codegen/gen.py#L734-L770 cc @jianyuh @nikitaved @pearu @mruberry @walterddr @IvanYashchuk @xwang233 @lezcano Pull Request resolved: pytorch#70980 Approved by: https://github.com/lezcano, https://github.com/kit1980
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The time has come to remove deprecated linear algebra related functions. This PR removes
torch.lstsq.There's a note in
tools/codegen/gen.pyaboutlstsqschema innative_function.yamlthat I will not remove:pytorch/tools/codegen/gen.py
Lines 734 to 770 in 87139d8
cc @jianyuh @nikitaved @pearu @mruberry @walterddr @IvanYashchuk @xwang233 @lezcano