[slurm-users] [EXTERNAL] Re: Question about PMIX ERROR messages being emitted by some child of srun process

Christopher Samuel chris at csamuel.org
Tue May 23 19:59:28 UTC 2023

On 5/23/23 10:33 am, Pritchard Jr., Howard wrote:

> Thanks Christopher,

No worries!

> This doesn't seem to be related to Open MPI at all except that for our 5.0.0 and newer one has to use PMix to talk to the job launcher.
> I built MPICH 4.1 on Perlmutter using the --with-pmix option and see a similar message from srun --mpi=pmix

That's right, these messages are coming from PMIx code rather than MPI.

> I too noticed that if I set PMIX_DEBUG=1 the chatter from srun stops.

Yeah, it looks like setting PMIX_DEBUG to anything (I tried "hello") 
stops these messages from being emitted.

Slurm RPMs with that patch will go on to Perlmutter in the Thursday 

All the best,
Chris Samuel  :  http://www.csamuel.org/  :  Berkeley, CA, USA

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