Firedrake CI should include parallel tests

[connorjward]

By not having parallel tests loopy missed an issue regarding mismatching hashes between ranks. I think if you had parallel tests then this would not have happened.

I think this could be fixed simply be modifying the line

pytest --tb=native -rsxw --durations=10 -m 'not parallel' tests/multigrid/

by removing the -m "not parallel" bit.

Note that we also usually have a different set of "smoke tests" instead of tests/multigrid: https://www.firedrakeproject.org/download.html#testing-the-installation

Further, tests/multigrid has just been moved to tests/firedrake/multigrid.

[inducer]

Makes sense, at least as long as the CI time can be kept under control. Could you submit a PR?

[connorjward]

Sure. Will do.