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@ngimel ngimel commented Oct 24, 2025

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🧪 See artifacts and rendered test results at hud.pytorch.org/pr/166181

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@pytorch-bot pytorch-bot bot added ci-no-td Do not run TD on this PR oncall: distributed Add this issue/PR to distributed oncall triage queue release notes: distributed (c10d) release notes category labels Oct 24, 2025
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@ngimel has imported this pull request. If you are a Meta employee, you can view this in D85457960.

…g results (#166181)

Summary:
Per title


cc H-Huang awgu wanchaol fegin fduwjj wz337 wconstab d4l3k pragupta msaroufim dcci


Reviewed By: kwen2501

Differential Revision: D85457960

Pulled By: ngimel
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@ngimel has exported this pull request. If you are a Meta employee, you can view the originating Diff in D85457960.

@ngimel ngimel changed the title Reverts #163712 and errors in allgather/scatter to avoid silent wrong results Reverts #163712 and forces allgather/scatter inputs/outputs to be contiguous Oct 24, 2025
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ngimel commented Oct 24, 2025

@pytorchbot merge

@pytorch-bot pytorch-bot bot added the ciflow/trunk Trigger trunk jobs on your pull request label Oct 24, 2025
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@ngimel ngimel added this to the 2.9.1 milestone Nov 1, 2025
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ngimel commented Nov 1, 2025

@pytorchbot cherry-pick --onto release/2.9 --fixes "crash with deterministic scatter_add implementation" -c regression

pytorchbot pushed a commit that referenced this pull request Nov 1, 2025
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Cherry picking #166181

The cherry pick PR is at #166779 and it is linked with issue crash with deterministic scatter_add implementation. The following tracker issues are updated:

Details for Dev Infra team Raised by workflow job

atalman pushed a commit that referenced this pull request Nov 4, 2025
…tiguous (#166779)

Reverts #163712 and forces allgather/scatter inputs/outputs to be contiguous (#166181)

Per title

Pull Request resolved: #166181
Approved by: https://github.com/kwen2501

(cherry picked from commit 2efcf3c)

Co-authored-by: Natalia Gimelshein <[email protected]>
@github-actions github-actions bot deleted the ngimel/discont_allgather branch December 1, 2025 02:20
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