Sorry, my original script was: #!/usr/local_rwth/bin/zsh ### Job name #SBATCH -J LSDYNA_OMP ### File / path where output will be written, the %J is the job id #SBATCH -o LSDYNA_OpenMPI.%J ### Request the time you need for execution in minutes ### The format is: [hour:]minute, for 80 minutes you can use: 1:20 #SBATCH -t 120:00:00 ### Request memory you need for your job in MB #SBATCH --mem-per-cpu=2000M #SBATCH --nodes=1 ulimit -s 600000 ### Request the number of compute slots you want to use #SBATCH --ntasks=12 #SBATCH --mail-type=end #SBATCH --mail-user=sim@isf.rwth-aachen.de #SBATCH --account=rwth0398 ### load modules module load TECHNICS module load intelmpi module load lsdyna cd $WORK/LSDYNA # start non-interactive batch job $MPIEXEC --propagate=STACK $FLAGS_MPI_BATCH ls-dyna_mpp_intel i=sFSWmodel.k Without $ before STACK, just as in the documentation!