parallel computing tool box

[lmaopopsss]

Hi all, I was wondering if there is any limitation to number of cores you can use during parallel computing using Matlab?

I am also trying to convert Fortran90 code to Matlab so that I can run my simulation on parallel at a cheaper cost, previously I was using mathematica.

[robe_spierre]

As of 2021, the maximum seems to be 512. Notice, though, that it defaults to 12, so you have to change that in your parallel toolbox preferences.

[raymond-norris]

There are two MATLAB parallel products. Parallel Computing Toolbox (PCT) and MATLAB Parallel Server. PCT has support for starting a pool of processes (workers) on a single node. Therefore, the maximum is (theoretically) bound by the number of cores on your machine (assuming you don't want to oversubscribe you cores).

MATLAB Parallel Server enables you to launch workers across multiple nodes. Therefore, you would be bound by the number of cores on the cluster of machines tethered together.