I tried both “—with-pmix=/opt/pmix” and “—with-pmix=internal” and got the same
“UNREACHABLE” error both ways. I tried the “external” first since that is what
SLURM was built against.
I’m missing something simple/basic - just not sure what it is.
> On Aug 6, 2017, at 7:43 AM, Gilles Gouaillardet
> <gilles.gouaillar...@gmail.com> wrote:
> did you build Open MPI with the external PMIx ?
> iirc, Open MPI 2.0.x does not support cross version PMIx
> On Sun, Aug 6, 2017 at 7:59 PM, Charles A Taylor <chas...@ufl.edu> wrote:
>>> On Aug 6, 2017, at 6:53 AM, Charles A Taylor <chas...@ufl.edu> wrote:
>>> Anyone successfully using PMIx with OpenMPI and SLURM? I have,
>>> 1. Installed an “external” version (1.1.5) of PMIx.
>>> 2. Patched SLURM 15.08.13 with the SchedMD-provided PMIx patch (results in
>>> an mpi_pmix plugin along the lines of mpi_pmi2).
>>> 3. Built OpenMPI 2.0.1 (tried 2.0.3 as well).
>>> However, when attempting to launch MPI apps (LAMMPS in this case), I get
>>> [c9a-s2.ufhpc:08914] PMIX ERROR: UNREACHABLE in file
>>> src/client/pmix_client.c at line 199
>> I should have mentioned that I’m launching with
>> srun —mpi=pmix …
>> If I launch with
>> srun —mpi=pmi2 ...
>> the app starts and runs without issue.
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