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--- doku:matlab [2020/01/16 12:46] – [Run Matlab Task from command line] ir
+++ doku:matlab [2022/12/21 07:18] – amelic
@@ Line 16: / Line 16: @@
-===== Batch Matlab job on VSC-3 =====
-In order to be able to use matlab, you have to load the program with the 'module load xyz' command
-<code>
-[username@l32]$ module avail  # select a matlab version
-[username@l32]$ module load Matlab/v9.5_R2018b # load desired version
-[username@l32]$ module list   # check loaded modules
-Currently Loaded Modulefiles:
-) Matlab/v9.5_R2018b
-</code>
-(See also the introduction to the [[https://wiki.vsc.ac.at/doku.php?id=doku:slurm|module command.]])
-Now, Matlab can be called by
-<code>
-[username@l32]$ matlab
-</code>
-==== Example: Serial Matlab Task ====
-We use the matlab m-file {{doku:myplot.m|myplot.m}} and create a file called ''jobSerial.sh'' as your job script, with the following basic contents:
-<code>
-#!/bin/bash
-#
-#SBATCH -J test                     # job name
-#SBATCH -N 1                        # number of nodes
-#SBATCH --ntasks-per-node=1
-#SBATCH --ntasks-per-core=1
-#SBATCH --threads-per-core=1
-#SBATCH --time=10                   # run time unit=minutes
-#SBATCH -L matlab@vsc
-module purge
-module load Matlab/v9.5_R2018b # load desired version
-export OMP_NUM_THREADS=1
-time matlab < myplot.m
-</code>
-<code>
-[username@l32]$ sbatch jobSerial.sh   # submit your job
-[username@l32]$ squeue -u username    # check state of your job
-</code>
-==== Example: Local Matlabpool ====
-We use the m-file ''main.m'' and create the following shellscript ''jobPool.sh''
-== jobPool.sh ==
-<code>
-#!/bin/bash
-#
-#SBATCH -J test                     # job name
-#SBATCH -N 1                        # number of nodes
-#SBATCH --ntasks-per-node=16        # here we use all 16 cores of the node
-#SBATCH --ntasks-per-core=1
-#SBATCH --threads-per-core=1
-#SBATCH --time=100                   # run time unit=minutes
-#SBATCH -L matlab@vsc
-module purge
-module load Matlab/v9.5_R2018b # load desired version
-export OMP_NUM_THREADS=1
-time matlab < main.m
-</code>
-== main.m ==
-<code>
-matlabpool %open local 8	% local profile is default setting, at most 8 workers are allowed with the local scheduler
-matlabpool size
-n = 500; K = 50; L = 10; T = zeros(1,L);
-% serial inner loop
-for l = 1:L
-tic
-for k = 1:K
-    eig(rand(n));
-end
-T(l) = toc;
-end
-disp(['serial: ',num2str(mean(T))])
-% parallel inner loop
-for l = 1:L
-tic
-parfor k = 1:K
-    eig(rand(n));
-end
-T(l) = toc;
-end
-disp(['parallel: ',num2str(mean(T))])
-matlabpool close
-</code>
-== command line on the login node ==
-<code>
-[username@l32]$ sbatch jobPool.sh     # submit your job
-[username@l32]$ squeue -u username    # check state of your job
-</code>