Job Scripts

Serial Single Threaded

This example illustrates a job script designed to run a simple single-threaded processes on a single compute node:

{{{#!/bin/bash #SBATCH --job-name=mySerialjob #SBATCH --nodes=1 #SBATCH --ntasks-per-node=1 #SBATCH --cpus-per-task=1 #SBATCH --time=0-00:20:00 #SBATCH --mem=3102


module load someApp someApp }}}


A single process run only requires 1 node, as well as 1 cpu and a single task. These are reflected in the example script. We change to the same directory from where we submitted the job ( ${SLURM_SUBMIT_DIR} to produce our output. Then we load the module "someApp" and execute it.

Multi-Threaded Single Node

In this example we are running an application capable of utilizing multiple process threads on a single node (BLAST):


#SBATCH --job-name=myBLASTjob

#SBATCH --nodes=1

#SBATCH --ntasks-per-node=1

#SBATCH --cpus-per-task=8

#SBATCH --time=0-01:00:00

#SBATCH --mem=3102


module load BLAST

blastn --num_threads 8 <...> }}}


In this case we still have a single task (our blastn run) but we require 8 cpu cores to accommodate the 8 threads we've specified on the command line. The ellipses between the angle brackets represents the balance of our command line arguments.