blogin> sbatch myjobscipt.slurm
Submitted batch job 8028673
blogin> ls slurm-8028673.out
slurm-8028673.out

Using mpirun

Using mpirun the pinning is controlled by the MPI library. Pinning by slurm you need to switch off by adding export SLURM_CPU_BIND=none.

MPI only

#!/bin/bash
#SBATCH --nodes=2
#SBATCH --partition=standard96cpu-clx:test
module load impi/2019.5openmpi/gcc/5.0.3
export SLURM_CPU_BIND=none
mpirun -np 192 --map-ppnby ppr:96:node ./hello.bin

Binding with OpenMPI

When using OpenMPI, binding is controlled using the –-bind-to parameter. To bind processes to cores, use --bind-to core. Possible other values can be found in the man page.