Hi, PMIx has cross-version compatibility, so as long as the PMIx library used by SLURM is compatible with the one (internal or external) used by Open MPI, you should be fine. If you want to minimize the risk of cross-version incompatibility, then I encourage you to use the same (and hence external) PMIx that was used to build SLURM with Open MPI.
Can you tell a bit more than "it didn't work" ? (Open MPI version, PMIx version used by SLURM, PMIx version used by Open MPI, error message, ...) Cheers, Gilles On Sat, Feb 23, 2019 at 9:46 PM Passant A. Hafez <passant.ha...@kaust.edu.sa> wrote: > > > Good day everyone, > > I've trying to build and use the PMIx support for Open MPI but I tried many > things that I can list if needed, but with no luck. > I was able to test the PMIx client but when I used OMPI specifying srun > --mpi=pmix it didn't work. > > So if you please advise me with the versions of each PMIx and Open MPI that > should be working well with Slurm 18.08, it'd be great. > > Also, what is the difference between using internal vs external PMIx > installations? > > > > All the best, > > -- > > Passant A. Hafez | HPC Applications Specialist > KAUST Supercomputing Core Laboratory (KSL) > King Abdullah University of Science and Technology > Building 1, Al-Khawarizmi, Room 0123 > Mobile : +966 (0) 55-247-9568 > Mobile : +20 (0) 106-146-9644 > Office : +966 (0) 12-808-0367 > _______________________________________________ > users mailing list > users@lists.open-mpi.org > https://lists.open-mpi.org/mailman/listinfo/users _______________________________________________ users mailing list users@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/users
