[slurm-users] OpenMPI & Slurm: mpiexec/mpirun vs. srun

[Christopher Samuel]

On 19/12/17 12:13, rhc at open-mpi.org wrote:

> We have had reports of applications running faster when executing 
> under OMPI’s mpiexec versus when started by srun.

Interesting, I know that used to be the case with older versions of
Slurm but since (I think) about 15.x we saw srun scale better than
mpirun (this was for the molecular dynamics code NAMD).

-- 
  Chris Samuel  :  http://www.csamuel.org/  :  Melbourne, VIC