pytorch - 💡(How to fix) Fix DISABLED test_barrier_timeout_arg (__main__.TestDistBackendWithSpawn) [1 comments, 1 participants]

Official PRs (…)
ON THIS PAGE

Recommended Tools

×6

Utilities matched from this issue’s tags and category — try them while you read without losing context.

GitHub issue graph ai analysis

Paste a GitHub issue URL. We fetch that issue, discover linked issues from bodies/comments/timeline, collect linked pull requests, and produce a structured English report.

The report is written in English Markdown for sharing and archival.

Helpful · Quick feedback

Loading…
GitHub stats
pytorch/pytorch#179691Fetched 2026-04-09 07:50:37
View on GitHub
Comments
1
Participants
1
Timeline
52
Reactions
0
Participants
Timeline (top)
mentioned ×24subscribed ×24labeled ×3commented ×1

Root Cause

This test was disabled because it is failing in CI. See recent examples and the most recent trunk workflow logs.

RAW_BUFFERClick to expand / collapse

Platforms: linux

This test was disabled because it is failing in CI. See recent examples and the most recent trunk workflow logs.

Over the past 6 hours, it has been determined flaky in 7 workflow(s) with 0 failures and 7 successes.

Debugging instructions (after clicking on the recent samples link): DO NOT ASSUME THINGS ARE OKAY IF THE CI IS GREEN. We now shield flaky tests from developers so CI will thus be green but it will be harder to parse the logs. To find relevant log snippets:

  1. Click on the workflow logs linked above
  2. Click on the Test step of the job so that it is expanded. Otherwise, the grepping will not work.
  3. Grep for test_barrier_timeout_arg
  4. There should be several instances run (as flaky tests are rerun in CI) from which you can study the logs.

Test file path: distributed/test_distributed_spawn.py

For all disabled tests (by GitHub issue), see https://hud.pytorch.org/disabled.

cc @awgu @wanchaol @fegin @fduwjj @wz337 @wconstab @d4l3k @pragupta @msaroufim @dcci @aditvenk @xmfan

extent analysis

TL;DR

The test test_barrier_timeout_arg in distributed/test_distributed_spawn.py is failing intermittently in CI and needs to be debugged by analyzing the workflow logs.

Guidance

  • To debug the issue, follow the provided debugging instructions: click on the workflow logs, expand the Test step, and grep for test_barrier_timeout_arg to find relevant log snippets.
  • Study the logs from multiple instances of the test run to identify patterns or common errors that may be causing the flakiness.
  • Review the test code in distributed/test_distributed_spawn.py to understand its functionality and potential failure points.
  • Check the list of disabled tests at https://hud.pytorch.org/disabled to see if there are any related issues or tests that may be contributing to the problem.

Notes

The issue is intermittent, with 7 successes and 0 failures in the past 6 hours, which may indicate a timing-related or environmental issue.

Recommendation

Apply workaround: temporarily re-enable the test and run it locally or in a controlled environment to gather more detailed logs and debug information, as the CI logs may not provide enough context to identify the root cause.

Vote matrix · Quick signals

Works
Did the solution work? Tap to confirm.
Easy Fix
Was it a quick fix?
Time Saver
Did it save you time?
Blocking
Was it severely blocking?
Common Issue
Are others likely hitting this too?
Flaky / Intermittent
Is it intermittent?
Verified / Reproducible
Can you reproduce it reliably?
Loading…

Still need to ship something?

×6

Another batch ranked right after the header list — different links, same matching logic.

Back to top recommendations

TRENDING