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==== Explanation ==== === Explanation ===

Job Scripts

Serial Single Threaded

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

#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

Explanation

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

cd ${SLURM_SUBMIT_DIR}

module load BLAST
blastn --num_threads 8 <...>

Explanation

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.

command


CategoryHPC