The parallel computing toolbox has been installed but parfor only utilize 1.5 CPU out of 8...and, parpool gives an error

Question

Ji Hyun Ko 2013-11-7

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https://ww2.mathworks.cn/matlabcentral/answers/105284-the-parallel-computing-toolbox-has-been-installed-but-parfor-only-utilize-1-5-cpu-out-of-8-and-pa

回答： Sean de Wolski 2013-11-7

I am trying to use parfor, but it only uses 1.5 CPU (~20% while I have 8 CPU). So, I tried parpool(4), but it gives me an error.

Error using parpool (line 99) Undefined function or variable 'matlab.internal.getSettingsRoot'.

I guess this means that my parallel computing toolbox is not correctly installed, but I uninstall/re-install, but it didn't solve the problem.

The thing is that when I installed the matlab (2013b), and when I checked "ver", it didn't show parallel computing toolbox. So, I added every folder in C:\Program Files\MATLAB\R2013b\toolbox\distcomp in the set-path, then "ver" showed parallel computing toolbox 6.3...

Is there anything wrong with the way that I set up the parallel computing toolbox?

Best,

Ji Hyun