[mpich-discuss] mpiexec.hydra binding for multiple compute nodes

[Martin Cuma]

Justin,

I would also do
#SBATCH -N 2
#SBATCH -n 32

since if you do
#SBATCH -n 40

and then run
mpiexec -np 32, Slurm will put 20 tasks on node 0 and 12 on node 1.

With the #SBATCH -n 32, Slurm will give you a node with 16 or more cores, 
so, 20 core node will be used if core count <20 is not available..

MC

-- 
Martin Cuma
Center for High Performance Computing
Department of Geology and Geophysics
University of Utah

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