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--- submission_script [2021/09/01 15:47] – created nico
+++ submission_script [2021/11/17 22:30] (current) – nico
@@ Line 1: / Line 1: @@
-Hi hi
+===== Simple job script =====
+A submission file script contains all the information required by SLURM in order to launch your job. We will detail a very simple script that launch "hostname" on two hosts :
+  nicolas.greneche@magi1:~$ cat hostname.slurm
+  #!/bin/bash
+  #SBATCH --job-name=hostname
+  #SBATCH --output=slurm.out
+  #SBATCH --error=slurm.err
+  #SBATCH --mail-type=end
+  #SBATCH --mail-user=nicolas.greneche@univ-paris13.fr
+  #SBATCH --nodes=2
+  srun hostname
+We submit this script with "sbatch" command :
+  nicolas.greneche@magi1:~$ sbatch hostname.slurm
+  Submitted batch job 44066
+And we check the output :
+  nicolas.greneche@magi1:~$ cat slurm.out
+  magi66
+  magi75
+===== OpenMP job script =====
+Here is a simple script for OpenMP :
+  nicolas.greneche@magi1:~$ cat run.slurm
+  #!/bin/bash
+  #SBATCH --job-name=OMP_hello
+  #SBATCH --output=slurm.out
+  #SBATCH --error=slurm.err
+  #SBATCH --partition=COMPUTE-SHORT
+  #SBATCH --nodes=1
+  #SBATCH --ntasks-per-node=1
+  #SBATCH --cpus-per-task=4
+  export OMP_NUM_THREADS=4
+  srun hello_openmp
+We submit it :
+  nicolas.greneche@magi1:~$ sbatch run.slurm
+  Submitted batch job 44075
+And check the output :
+  nicolas.greneche@magi1:~$ cat slurm.out
+  Thread 0 says: Hello World on core 6
+  Thread 0 reports: the number of threads are 4
+  Thread 1 says: Hello World on core 32
+  Thread 3 says: Hello World on core 1
+  Thread 2 says: Hello World on core 14
+===== MPI job script =====
+  nicolas.greneche@magi1:~$ cat run.slurm
+  #!/bin/bash
+  #SBATCH --job-name=hello
+  #SBATCH --output=slurm.out
+  #SBATCH --error=slurm.err
+  #SBATCH --nodes=2
+  #SBATCH --ntasks-per-node=2
+  module load gcc/8.3.0/openmpi/3.1.4
+  srun ./hellompi
+We submit it :
+  nicolas.greneche@magi1:~$ sbatch run.slurm
+  Submitted batch job 44082
+And check the output :
+  nicolas.greneche@magi1:~$ cat slurm.out
+  Hello world from process 1 of 4 at magi66
+  Hello world from process 3 of 4 at magi75
+  Hello world from process 0 of 4 at magi66
+  Hello world from process 2 of 4 at magi75