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

Slurm scripts for mpirun

A slurm script is submitted to the job scheduler slurm. It contains

• the control about requested compute nodes and
• commands to start your binary. Using mpirun the pinning is controlled by the MPI library. Pinning by slurm to start the binary you need to switch off slurm binding by adding export SLURM_CPU_BIND=none.

MPI only

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

#!/bin/bash
#SBATCH --nodes=2
#SBATCH --partition=cpu-clx:test
module load openmpi/gcc/5.0.3
export SLURM_CPU_BIND=none
mpirun -np 96 --map-by ppr:48:node ./hello.bin

MPI, OpenMP

You can run one code compiled with MPI and OpenMP. The examples cover the setup

• 2 nodes,
• 4 processes per node, 24 threads per process.