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

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

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

I had something like this happen on a test cluster of Raspberry Pis several years ago, and in my case, I was able to isolate it to being an MPI issue unrelated to SLURM. If you can run directly on the nodes, that might be a useful distinction for you to try to make. (Running "directly" might mean m