[CI] Oversubscribe in OpenMPI jobs #790
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This didn't use to be necessary, but probably recent changes in the GitHub Actions runners caused `mpiexec -n 4` to complain about insufficient slots available.
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This is working: the test-system-apt (libopenmpi-dev, 1) job, which is currently failing on Edit: I'm now convinced the failures may have depended on the exact machine used during a CI run (with 2 vs 4 vCPUs), but this PR avoids hard failures in case we get a smaller machine anyway. |
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This didn't use to be necessary, but probably recent changes in the GitHub Actions runners caused
mpiexec -n 4to complain about insufficient slots available.