Hallo everyone, I am currently implementing a PMIx server and I try to use it with OpenMPI. I do have an own mpiexec which starts my PMIx server and launches the processes.
If I launch an executable linked against OpenMPI, during MPI_Init() the ORTE layer starts another PMIx server and overrides my PMIX_* environment so this new server is used instead of mine. So I am looking for a method to prevent orte(d) from starting a PMIx server. I already tried to understand what the slurm support is doing, since this is (at least in parts) what I think I need. Somehow when starting a job with srun --mpi=pmix_v2 the ess module pmi is started, but I was not able to enforce that manually by setting an MCA parameter (oss should be the correct one?!?) And I do not yet have a clue how the slurm support is working. So does anyone has a hint for me where I can find documentation or information concerning that or is there an easy way to achieve what I am trying to do that I missed? Thank you in advance. Regards, Stephan _______________________________________________ devel mailing list devel@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/devel
