Re: [OMPI users] psec warning when launching with srun

Hello Christoph, what exactly is your problem with OpenMPI and Slurm? Do you compile the products yourself? Which LINUX distribution and version are you using? If you compile the software yourself, could you please tell me what the "configure" command looks like and which MUNGE version is in use

[OMPI users] mpirun seemingly requires --host and --oversubscibe when running more than -np 2 on some nodes

Hi All, I am seeing some funky behavior and am hoping someone has some ideas on where to start looking. I have installed openmpi 4.1.4 via spack on this cluster, Slurm aware. I then build Orca against that via spack as well (for context). Orca calls mpi under the hood with simple `mpirun -np X

[OMPI users] ORTE_ERROR_LOG: Data unpack would read past end of buffer in file util/show_help.c at line 501; error in device init Mesh created.

RHEL 8 with OpenMPI 4.1.5a1 on a HPC cluster compute node Singularity version 3.7.1. I see the error in another issue mentioned at the Git page an on SO