Summary
The CPU test 903FA85A (1D -> Bubbles -> 2 Fluid(s)) fails intermittently under high test parallelism with
[Errno 2] No such file ... 'p0'
It passes when run alone (--only 903FA85A).
Context
- Full CPU suite on LLNL Tuolumne:
./mfc.sh test --no-mpi --no-gpu -j 48, with 711 passed, 1 failed (this test), 50 skipped.
- The missing path is the post-process output directory.
toolchain/mfc/test/test.py reads silo_hdf5/p0 around line 834, so this looks like a race between a test's post-processing and the harness reading or cleaning its output, or a shared path between concurrently running cases.
- Not investigated further.
Found with Claude Code during a full-suite run for #1963.
Summary
The CPU test
903FA85A(1D -> Bubbles -> 2 Fluid(s)) fails intermittently under high test parallelism withIt passes when run alone (
--only 903FA85A).Context
./mfc.sh test --no-mpi --no-gpu -j 48, with 711 passed, 1 failed (this test), 50 skipped.toolchain/mfc/test/test.pyreadssilo_hdf5/p0around line 834, so this looks like a race between a test's post-processing and the harness reading or cleaning its output, or a shared path between concurrently running cases.Found with Claude Code during a full-suite run for #1963.