[slurm-users] Slurm-17.11.5 + Pmix-2.1.1/Debugging

Christopher Samuel chris at csamuel.org
Tue May 8 18:33:33 MDT 2018

On 09/05/18 10:23, Bill Broadley wrote:

> It's possible of course that it's entirely an openmpi problem, I'll
> be investigating and posting there if I can't find a solution.

One of the changes in OMPI 3.1.0 was:

- Update PMIx to version 2.1.1.

So I'm wondering if previous versions were falling back to PMIx v1
support in PMIx v2 whereas now it's trying to use v2?

Could explain that OPAL_PMIX_V1 definition in previous versions.

What is your default MPI type?

scontrol show config | fgrep MpiDefault

If it's not pmix_v2 then you'll probably need to specify that, you can
test with "srun --mpi=pmix_v2".

  Chris Samuel  :  http://www.csamuel.org/  :  Melbourne, VIC

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