Matlab

Using Matlab interactively

[test@login31 ~]$ srun --mem 10G --x11 --pty bash
srun: job 3109996 queued and waiting for resources
srun: job 3109996 has been allocated resources
[test@compute-152 ~]$ module load matlab
[test@compute-152 ~]$ module list

Currently Loaded Modules:
  1) JHPCE_ROCKY9_DEFAULT_ENV   2) JHPCE_tools/3.0   3) matlab/R2023a

[test@compute-152 ~]$ matlab

Running Matlab program in batch mode

1. Write your matlab source in a file with .m extension (e.g. matlab_example.m)

   x = [1 2 3 4];
   fprintf('Example number = %i\n', x)
   

2. Write a submit job script (e.g. matlab_example.sh)

   #!/bin/bash
   
   #SBATCH --mem=2G
   #SBATCH --time=5:00
   
   #SBATCH -o slurm.%N.%J.%u.out   # STDOUT
   #SBATCH -e slurm.%N.%J.%u.err   # STDERR
   
   module load matlab
   matlab -nojvm -nodisplay -r "matlab_example;quit;"
   

3. Submit your matlab job

   [test@login31 ~]$ sbatch matlab_example.sh 
   Submitted batch job 3110505
   

4. Monitor the job status

   [test@login31 ~]$ squeue --me
                JOBID PARTITION     NAME     USER ST       TIME  NODES NODELIST(REASON)
              3110505    shared matlab_e    test  R       0:03      1 compute-100
   

5. When the job is finished, the output files are created in your Current Working Directory

   -rw-r--r-- 1 test test   0 Mar 12 17:09 slurm.compute-100.3110505.test.err
   -rw-r--r-- 1 test test 410 Mar 12 17:10 slurm.compute-100.3110505.test.out
   

6. Look at the results from output file, file with stderr is empty(job without errors):

   [test@login31 ~]$ cat slurm.compute-100.3110505.test.out
                                   May 25, 2023
   
   For online documentation, see https://www.mathworks.com/support
   For product information, visit www.mathworks.com.
   
   Example number = 1
   Example number = 2
   Example number = 3
   Example number = 4