Mellanox Open MPI CI: optimized git checkout step to reduce CI duration (v4.0.x)

[artemry-nv]

Signed-off-by: Artem Ryabov artemry@mellanox.com

[ompiteam-bot]

Can one of the admins verify this patch?

[rhc54]

ok to test

[ibm-ompi]

The IBM CI (GNU/Scale) build failed! Please review the log, linked below.

Gist: https://gist.github.com/ibm-ompi/88b480fb98dfd2bdac939f023e1f8fe6

[ibm-ompi]

The IBM CI (XL) build failed! Please review the log, linked below.

Gist: https://gist.github.com/ibm-ompi/88b480fb98dfd2bdac939f023e1f8fe6

[artemry-nv]

CC @amaslenn

[jsquyres]

bot:ibm:retest

[jsquyres]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[jsquyres]

@gpaulsen @hppritcha Given that the Mellanox AZP stuff was committed to the v4.0.x branch, you might want this one, too -- it's an optimization that reduces the CI run time.

[gpaulsen]

Yes, thanks. We'll take this one post v4.0.3

[gpaulsen]

Jeff reached out and let us know that we already took this PR into v4.0.x, so we should consider taking this sooner than later.
I want to understand the Mellanox CI failure first however. I'm reaching out to @jladd-mlnx and @artemry-mlnx via email to ask for help.

[artemry-nv]

Mellanox Open MPI CI failure is expected (detailed log file) - it's because of Open MPI behavioral changes in #7202 which were reflected in the CI scripts mellanox-hpc/jenkins_scripts#92 (see this comment mellanox-hpc/jenkins_scripts#92 (comment)).
Need to fork CI tests specifically to Open MPI v4.0.x (there's no plan to port #7202 to v4.0.x - #7202 (comment)) and switch CI to them in v4.0.x - I'll deal with this.

[jsquyres]

@artemry-mlnx Gotcha. FWIW, I maintain different config files for Cisco's testing of different Open MPI branches for exactly this reason (the behavior and/or CLI params changes over time).

[jladd-mlnx]

bot:mellanox:retest

[artemry-nv]

@jladd-mlnx
Mellanox Open MPI v4.0.x CI will pass only after #7468
Pay attention that bot:mellanox:retest is not supported by Azure Pipelines so please use /azp run to restart Mellanox CI (see README for details).

[jladd-mlnx]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[gpaulsen]

Hmm. This is failing on perhaps the only test that passes --am /__w/2/ompi/test_amca.conf to mpirun. there's another test that passes --tune /__w/2/ompi/test_amca.conf. @artemry-mlnx could you please take a look?

[gpaulsen]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[artemry-nv]

@gpaulsen
Mellanox Open MPI CI for v4.0.x passes after #7468

[artemry-nv]

Could anyone please merge this PR?

[jsquyres]

Milestone wasn't set -- the v4.0 RMs probably didn't see this PR.