MATLAB: Does matlab create only one worker on each core when you use parallel toolbox

parallel computing

I have R2011b, use parallel toolbox and wanna know how it duplicates workers. Is it supposed to create just one worker on each core?

Best Answer

Yes, that's right - the default is to use the number of physical cores (not hyperthreaded cores). You can override this choice by setting the NumWorkers property of the local scheduler.

Related Solutions

MATLAB: How does parsim() run more instances than workstation cores

Set NumWorkers as 6 in cluster profile manager. Go to

MATLAB Toolstrip (menu bar) 
-> Parallel 
-> Manage Cluster Profiles

-> Select your cluster 
   (if you are working on your machine, please select "local") 
-> Click Edit
-> Change/Set NumWorkers to 6 
   (In the image, NumWorkers is set as 4)

After setting NumWorkers as 6, run parsim again.

MATLAB: Best “local” scheduler for more than 8 workers

If you have a license for MATLAB Distributed Computing Server, you can set it up the job manager on the local machine.

MDCS installation instructions

Once this is set up, you can access it via the "jobmanager" configuration, and you will not be limited to 8 workers, as you are with the local scheduler.

Best Answer

Related Solutions

MATLAB: How does parsim() run more instances than workstation cores

MATLAB: Best “local” scheduler for more than 8 workers

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