Slurm

The Slurm job scheduler on the High Performance WiWi Cluster (HPC3)

3 Submitting jobs

3.1 Batch jobs

Slurm provides support for unattended execution of jobs on the cluster's resources , which is perhaps the most common way of using it (batch mode). For this purpose, a shell script is passed to the job scheduler, containing

• the commands to be executed and
• some extra information for the slurm job scheduler (optional).

Let us take a closer look at how to create such a script. We start with the first line, telling the OS which kind of UNIX shell to use for interpreting the commands in the script.

#!/bin/bash

Then we add a series of directives for the slurm job scheduler, each starting with a '#SBATCH'. Although the '#' character usually indicates a comment, this specific string gets interpreted by slurm and allows to set various options.

#SBATCH -N 1
#SBATCH --ntasks-per-node=16
#SBATCH --ntasks-per-core=1
#SBATCH --partition=mem_0064
#SBATCH --qos=normal_0064
#SBATCH --mail-type=BEGIN,END
#SBATCH --mail-user=roland.braune@univie.ac.at