2.4.2. Running under MPI

Use the relevant cluster documentation to find out how to run under MPI. To use SLURM to run a job with 64 MPI processes, with two processes per node and 10 cores per process, you may need something similar to this (which would work on HPC.KU.DK):

#!/bin/bash
#SBATCH --ntasks=64 --ntasks-per-node=2 --cpus-per-task=32
#SBATCH --mem-per-cpu=3g --exclusive

export OMP_NUM_THREADS=32
./dispatch.x run.nml