Retrigger ComplicatedPDE (single-folder, infra-failed in burst-dispatch)#1567
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This folder failed in the burst-dispatch cascade on amdci3-1 around 2026-05-16T07:58 UTC — multiple jobs from PRs SciML#1559/SciML#1560/SciML#1561 dispatched to the runner simultaneously and corrupted its workspace (`The operation was canceled` + `Missing file at path: ..._runner_file_commands/...`). Single-folder matrix to avoid intra-PR collisions per Chris's direction ("split into smaller batches if something is blocking"). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com>
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Superseded — closing this 'trigger comment' PR in favor of clean per-folder PRs with real content changes (compat bumps, manifest regens, or actual benchmark fixes) instead of the hack |
ChrisRackauckas-Claude
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May 22, 2026
amdci3-1 corrupts its workspace under rapid dispatch — when 2+ jobs arrive within seconds, all but one die with errors like: ##[error]Missing file at path: ..._runner_file_commands/set_output_... ##[error]Can't find action.yml under .../_actions/actions/checkout/v6 ##[error]The operation was canceled. Single jobs on the runner run cleanly; the bug is purely concurrency-on-the-same-runner. Reproduced 3 times now: 1. Original 25374549824 v7 run: 3 jobs cancelled-mid-checkout in seconds 2. 2026-05-16 07:58 UTC burst: 6 jobs from PRs SciML#1559/SciML#1560/SciML#1561 dispatched to amdci3-1, all but one corrupted (StiffODE — which had been cleanly running for 16h — also got cancelled in the cascade) 3. 2026-05-16 08:31 UTC burst: all 5 single-folder PRs SciML#1563-SciML#1567 dispatched simultaneously, all 5 corrupted within seconds Splitting into per-folder PRs (per Chris's direction) doesn't help when multiple PRs are opened together — cross-PR dispatch hits the same race. Fix: job-level concurrency with a constant group + cancel-in-progress:false makes every matrix entry across every Benchmarks workflow run queue behind any other in-flight matrix entry. detect-changes / manual-matrix / publish jobs are unaffected (they're separate GHA jobs). Adds max-parallel: 1 to the matrix as defense-in-depth — within a single run, matrix entries already serialize via the concurrency group, but max-parallel makes it explicit. Throughput cost: even with two healthy runners (amdci1-1 + amdci3-1), only one benchmark job runs at a time. Acceptable given the alternative is a ~60% job-loss rate. Can be relaxed once the runner bug is fixed — e.g. parameterize the concurrency group by matrix.runner to allow one job per runner. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com>
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Summary
Single-folder retrigger PR for
benchmarks/ComplicatedPDE. It failed in the 2026-05-16 07:58 UTC burst on amdci3-1 with the runner-state-corruption pattern (Missing file at path: ..._runner_file_commands/...), not a real benchmark failure.Single-folder matrix to avoid intra-PR collisions per Chris's direction. Once the master detect-changes fix (#1562) is merged, this will auto-publish on merge.
Please ignore until reviewed by @ChrisRackauckas.