Sorry, I just read the configure line more closely. Do you have a strict dependency on PMIx? It is not required to run with ch4:ucx. The default process manager (Hydra) supports launching on Slurm clusters out of the box. Ken On 5/14/20, 9:52 AM, "Raffenetti, Kenneth J. via discuss" <[email protected]> wrote: Sorry for the delayed response. Why are you adding --with-pm=no to your configuration? Ken On 5/1/20, 3:20 PM, "Tony Curtis via discuss" <[email protected]> wrote: On May 1, 2020, at 4:04 PM, Sajid Ali <[email protected]> wrote: Hi Tony, Yes, and be sure to set the correct mpi launcher at runtime via the --mpi argument to srun (for more info check this page https://slurm.schedmd.com/mpi_guide.html ). Thanks - thought so. I’m just a j. Random user so I can’t do much about this. Tony _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss