How to launch “ Job”

Slurm queue system :

The principle of a resource manager is to reserve computing cores according to your needs.
You interact with the resource manager with the following commands:
sbatch : submission of a job in a queue (called partitions in Slurm);
scancel : canncel a job ;
squeue : job interrogation ;
sinfo :Queue Query ;
srun : immediate execution of an order ;

How to launch a "Job" :

To launch a job, you must create a script in which you must request resources and then call its program (see the following example).

#!/bin/bash 
#SBATCH -J test # Job name 
#SBATCH -o job.%j.out # Name of stdout output file (%j expands to %jobId) 
#SBATCH -N 2 # Total number of nodes requested 
#SBATCH -n 16 # Total number of mpi tasks #requested 
#SBATCH -t 01:30:00 # Run time (hh:mm:ss) - 1.5 hours 
# Launch MPI-based executable 
prun ./a.out 
# Submit job for batch execution

This script is then submitted to the queue manager with the sbatch command. for example :

# Submit job for batch execution
[test@sms ~]$ sbatch job.mpi
 Submitted batch job 339

We then obtain a job number, which can be manipulated with the scancel or squeue commands.

Track the status of a job:
It is possible to obtain the detail of the status of a job, whether it is pending or in execution, with the scontrol or squeue commands.
List of current jobs: