Keep raw cubin file around in case it gets deleted underneath us #153064
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🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/153064
Note: Links to docs will display an error until the docs builds have been completed. ⏳ 1 Pending, 1 Unrelated FailureAs of commit e01be2f with merge base 172e641 ( UNSTABLE - The following job is marked as unstable, possibly due to flakiness on trunk:
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oulgen
approved these changes
May 7, 2025
jansel
approved these changes
May 7, 2025
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@pytorchbot merge -f "Ignoring lint-url" |
Merge startedYour change will be merged immediately since you used the force (-f) flag, bypassing any CI checks (ETA: 1-5 minutes). Please use Learn more about merging in the wiki. Questions? Feedback? Please reach out to the PyTorch DevX Team |
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Stack from ghstack (oldest at bottom):
This diff hardens StaticCudaLauncher in the event a cubin file gets deleted under us. We store the raw cubin on the static cuda launcher, and reload it as needed. On cold start, this can happen if the cubin file is created by triton, and gets deleted before we can load the kernel on the parent process.
We don't want to store the entire cubin both in file format and in memory for caching purposes, so we delete it before caching the data. In the unfortunate/unlikely event where we can't load/find the necessary file on warm start, skip the stored triton launcher, falling back to regular triton.
This comes at a cost to worker memory, but it's not more memory than regular triton workers already take, so it should be okay.
Tests:
Fixes #153030
cc @voznesenskym @penguinwu @EikanWang @jgong5 @Guobing-Chen @XiaobingSuper @zhuhaozhe @blzheng @wenzhe-nrv @jiayisunx @ipiszy @chenyang78 @kadeng @muchulee8 @amjames @chauhang @aakhundov