Use all processors on workers.

Hi, i just want to ask if i can use all processors on worker. I have cluster with 12 workers and each worker has 12 processors. Now it seems like it takes just one processor per worker, which is wasting of computing power.

[Jan]

You did not explain your setup. Perhaps you did not configure the Matlab pool adequately?

Answer 1

[Jason Ross]

I'm assuming you have a cluster with 12 machines, each with 12 cores.

If you wanted to utilize all the CPUs with one worker per core, you'll need to start 12 workers on each machine, for a total of 144 workers.

Make sure that you keep an eye on memory utilization and network bandwidth utilization, as well -- if you go into swap or saturate your network connection, you can have a negative impact on performance, as well.

[freebil]

I have the same question.If i have a cluster with 12 machines,each with 12 cores, and i start 12 workers on each machine, is it necessary to write 144 tasks to use all the cores of all machines?Morevover,is it necessary to add parfor command to my program?Thanks