how to set corenumber on cluster for MATLAB+MPI-fortran parallel jobs

Hi,

I have a MATLAB job like this

parfor i = 1:100
    system('mpirun -np N fortran_mpi.exe')
end

In case i set parfor corenum for MATLAB as M, and processor number for fortran MPI command as N, I wonder how should I set an optimial SLURM script to submit and run my MATLAB job on cluster. Is this one good? I just set the cpu-per-task as the N*M.

#SBATCH --ntasks=1
#SBATCH --threads-per-core=1
#SBATCH --cpus-per-task=N*M

thanks

Answer 1

[Alvaro]

I am not too familiar with SLURM but from this question and others I think it looks good.

https://www.mathworks.com/matlabcentral/answers/747522-hpc-slurm-ntasks-and-matlab-parcluster-numworkers-question

It appears you might need N*M + 1 to account for a MATLAB client or head worker though.

https://www.mathworks.com/matlabcentral/answers/515100-matlab-parfor-on-slurm#comment_924209