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[cherry-pick] nccl: upgrade to 2.26.2 to avoid hang on ncclCommAbort (#149351)#149546

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malfet merged 2 commits intopytorch:release/2.7from
atalman:nccl_update_release27
Mar 26, 2025
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[cherry-pick] nccl: upgrade to 2.26.2 to avoid hang on ncclCommAbort (#149351)#149546
malfet merged 2 commits intopytorch:release/2.7from
atalman:nccl_update_release27

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@atalman atalman commented Mar 19, 2025

cherry-pick of nccl: upgrade to 2.26.2 to avoid hang on ncclCommAbort (#149351) to the release

Generated by: export RELEASE_VERSION_TAG=2.7 ./regenerate.sh

d4l3k and others added 2 commits March 19, 2025 11:58
Fixes pytorch#149153

Yaml generated from:

```
python .github/scripts/generate_ci_workflows.py
```

Test plan:

Repro in https://gist.github.com/d4l3k/16a19b475952bc40ddd7f2febcc297b7

```
rm -rf third_party/nccl
python setup.py develop
```

Pull Request resolved: pytorch#149351
Approved by: https://github.com/kwen2501, https://github.com/atalman, https://github.com/malfet
@atalman atalman requested review from a team and jeffdaily as code owners March 19, 2025 19:44
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pytorch-bot bot commented Mar 19, 2025

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/149546

Note: Links to docs will display an error until the docs builds have been completed.

❌ 2 New Failures

As of commit 6c4d618 with merge base 924a247 (image):

NEW FAILURES - The following jobs have failed:

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@Skylion007
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We didn't universally upgrade NCCL accross the common build scripts for AARCH and normal either...

@malfet malfet merged commit 84210a8 into pytorch:release/2.7 Mar 26, 2025
172 of 174 checks passed
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4 participants