On Tuesday, 6 October 2020 12:12:41 AM PDT Diego Zuccato wrote: > At least I couldn't replicate launching manually (it always says "no > slots available" unless I use mpirun -np 16 ...). I'm no MPI expert > (actually less than a noob!) so I can't rule out it's unrelated to > Slurm. I mostly hope that on this list I can find someone with enough > experience with both Slurm and MPI.
Launch it with "srun" rather than "mpirun", that way it'll be managed by Slurm. If your test program then says every rank is rank 0 that will tell you OpenMPI is not built with Slurm support. All the best, Chris -- Chris Samuel : http://www.csamuel.org/ : Berkeley, CA, USA