[slurm-users] Segfault with 32 processes, OK with 30 ???

[Chris Samuel]

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