Increase number of parallel pools coworker by adding hardware?

Hi, on my PC with Windows10, i9-10900K, 32GB RAM, i can launch max. 10 coworkers, which is the number I can reach on my machine, no matter what number i setup. But during processing data, my CPU get max. ca. 50% load, which I don't understand. So I am wondering whether it helps to add more RAM (32->64 GB) to increase the number of coworkers?

Does anyone know what is the relationship between CPU/RAM setups to number of coworkers?

Is there any suggestion for which CPU with how much RAM to get max. number of coworkers?

Thanks

Song

Answer 1

[Walter Roberson]

Check your Parallel Preferences

https://www.mathworks.com/help/parallel-computing/run-code-on-parallel-pools.html

And check the number of workers permitted in your "local" cluster; https://www.mathworks.com/help/parallel-computing/discover-clusters-and-use-cluster-profiles.html

The default permitted is the number of true cores you have -- excluding any effect for hyperthreading. (Hyperthreads that are not sometimes waiting for resources, such as waiting for disk or I/O, can end up making the overall execution slower)

Adding more RAM will not affect the number of workers permitted.

On the other hand, you should expect that workers will take a mininum of 2 Gb each, for the MATLAB image, plus the size of your data.

You should double check: is that 50% that you are seeing 50% of the nominal rate if you were using hyperthreads? Because 50% load measured against hypothetical hyperthreads means that your physical cores are at full load.

[Song Decn]

Thanks Walter! Your answer save me hundred bucks