Re: [OMPI users] users Digest, Vol 4903, Issue 1

2024-02-25 Thread Christopher Daley via users
> oversubscribed the first two cores, whether run from SLURM or directly. > > I found a work-around, was to use the "--map-by socket" argument to mpirun. > > I don't think I ever figured it out -- it was a short-lifetime test cluster > that I was using to explor

[OMPI users] Subject: Clarification about mpirun behavior in Slurm jobs

2024-02-23 Thread Christopher Daley via users
Dear Support, I'm seeking clarification about the expected behavior of mpirun in Slurm jobs. Our setup consists of using Slurm for resource allocation and OpenMPI mpirun to launch MPI applications. We have found that when two Slurm jobs have been allocated different cores on the same compute node