MATLAB Answers


How can I open a worker pool on a remote machine?

Asked by Amit Rotem on 9 Apr 2019
Latest activity Commented on by Jason Ross
on 10 Apr 2019
Can MATLAB send calculations to remote workers through ssh?
I want to achieve the following behavior:
% connect to remote machines via ssh
% and open 4 workers on each machine (i.e. total pool of 8 worker)
RemoteParpool('location',{'local','userA@address1','userB@address2'},'PoolSize',[2 3 4])
% distribute some work over 9 workers (6 remote & 2 local) and return an answer to the Workspace variable 'MyArray'
parfor j=1:10
MyArray(j)=rand; % do stuff
The remote (and local) machines all have MATLAB with Parallel Computing Toolbox and run on Linux. And I'm using passphraseless ssh login with shared keys.


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1 Answer

Answer by Jason Ross
on 9 Apr 2019
 Accepted Answer

This is the purpose of MDCE / MATLAB Parallel Server. It allows you to run the MATLAB job scheduler on a collection of machines, or integrate with an existing scheduler installation (Slurm, LSF, PBS, Torque, Grid Engine, etc). You submit the job to the remote scheduler using Parallel Computing Toolbox and then the job scheduler starts the MATLAB sessions and runs the job.
The documentation for MATLAB Parallel Server can be found here.


Thanks for the prompt answer! However, this seems overly complicated for my needs, I don't think I need a scheduler - I'll be the only one using the cluster. Is there a simpler solution in the case of a single client? (with Mathematica I can achieve this with just a few lines of code)
No, when you go off the single machine (local scheduler) you definitely need some kind of scheduler listening.
We do offer a means of parallelized computation on Amazon EC2, where all the scheduler setup happens on Amazon -- but that's not local resources, and it does require some other setup.

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