github act/mpi4py disable multi proc runs

[hppritcha]

for now. seem to timeout randomly

[wenduwan]

Hmm are we sure this isn't a bug?

[hppritcha]

yes likely, but it seems many of these problems are coming from accept/connect or spawn and although its good to get those working better i'd rather not have PRs that have nothing to do with this functionality failing with this CI test.

[rhc54]

Just wondering: is there a way for the CI to detect relevance? Maybe the PR submitter has to provide some hints, or the CI can look at the impacted subdirectories (e.g., if ompi/dpm is involved, you know you need spawn and accept/connect - if not, then maybe don't block the PR if those tests fail).

Or maybe look at CI history and see if the PR makes things worse? If not, then the PR isn't the issue.

[hppritcha]

Just wondering: is there a way for the CI to detect relevance? Maybe the PR submitter has to provide some hints, or the CI can look at the impacted subdirectories (e.g., if ompi/dpm is involved, you know you need spawn and accept/connect - if not, then maybe don't block the PR if those tests fail).

Or maybe look at CI history and see if the PR makes things worse? If not, then the PR isn't the issue.

i'll check if there are some options here.

[dalcinl]

Things are still broken, this new thing I'm getting today in ompi@main smells like a bug:
https://github.com/mpi4py/mpi4py-testing/actions/runs/7749602944/job/21134452410#step:22:8815

Yesterday, the v5.0x runs failed after a deadlock with np=3.
https://github.com/mpi4py/mpi4py-testing/actions/runs/7734380956/job/21088271374#step:20:4748

BTW, you should eventually backport this PR to branch v5.0.x (and maybe even v4.1.x?).

There are also a few tests that mpi4py is already skipping when running under Open MPI, I'll submit issues about them separately.

[hppritcha]

Things are still broken, this new thing I'm getting today in ompi@main smells like a bug: https://github.com/mpi4py/mpi4py-testing/actions/runs/7749602944/job/21134452410#step:22:8815

I can't reproduce this one, at least not standalone outside of github action world