===== MATLAB Jobs ===== 


==== MATLAB parallel job ====


=== Execution of a parallel job with MATLAB ===

<code>
cp -p /hpc/share/samples/matlab/pi_greco_parallel.m .
</code>

Script ''pi_greco_parallel.m'':

<code matlab pi_greco_parallel.m>
parpool('local');

tic
N_int=100;
N_int_0=1e2;
N_int_f=1e7;

passo=ceil((N_int_f-N_int_0)/N_int);
N=N_int_0:passo:N_int_f;
l=length(N);
res=zeros(l,1);
parfor i=1:l 
    Z=rand(2,N(i));
    res(i)=sum((Z(1,:)-0.5).^2+(Z(2,:)-0.5).^2<0.5^2)/(N(i)*0.5^2);
end

disp(res(end))
toc
</code>

Script ''matlab_parallel.sh'': 

<code bash matlab_parallel.sh>
#!/bin/sh
#SBATCH --job-name=matlab_parallel
#SBATCH --output=%x.o%j
#SBATCH --error=%x.e%j
#SBATCH --nodes=1
#SBATCH --ntasks-per-node=4
#SBATCH --partition=cpu
#SBATCH --mem=8G
#SBATCH --time=0-00:30:00
##SBATCH --account=<account>

hostname

module load matlab/R2022a

matlab -nodisplay -r pi_greco_parallel
</code>

Submitting ''matlab_parallel.sh'':

<code>
sbatch matlab_parallel.sh
</code>

/**
 * external link (replaced by internal link)
[[https://www.hpc.unipr.it/dokuwiki_test/doku.php?id=calcoloscientifico:userguide#matlab_jobs|go back on level]]
*/

[[calcoloscientifico:userguide:matlab:parallel|go back one level]]