Add support for OAR Scheduler

[ychiat35]

Types of changes

• New feature (non-breaking change which adds functionality)

Summary

The Oar scheduler is widely used in France, including mesocentre supercomputers (e.g., GRICAD), INRIA supercomputers, Grid5000 testbed and other platforms.

This PR adds support for the OAR Scheduler, following the implementation made for Slurm.

Checklist

• I have added tests to cover my changes (if necessary)
• I have updated documentation (if necessary)

[codecov]

Codecov Report

Attention: Patch coverage is 21.63743% with 134 lines in your changes missing coverage. Please review.

Project coverage is 88.11%. Comparing base (55c30c1) to head (7d021bb).

Files with missing lines	Patch %	Lines
pydra/workers/oar.py	21.31%	95 Missing and 1 partial ⚠️
pydra/workers/tests/test_worker.py	20.83%	38 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #713      +/-   ##
==========================================
- Coverage   88.75%   88.11%   -0.64%     
==========================================
  Files          84       85       +1     
  Lines       17891    18062     +171     
  Branches     3487     3525      +38     
==========================================
+ Hits        15879    15916      +37     
- Misses       1642     1774     +132     
- Partials      370      372       +2     

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[djarecka]

@ychiat35 - thank you for adding this worker. Would it be possible to test it within a container?

[ychiat35]

@ychiat35 - thank you for adding this worker. Would it be possible to test it within a container?

Hi, I'm trying to use oar-docker to do that. It is still WIP (I have to find more time doing that) but I noticed that the oar-docker solution requires cgroup v1, so I have to run on ubuntu-20.04 but not ubuntu-latest. Is this a problem for you?

[tclose]

Did you ever get this working? Should I try to port it to the new structure