Run matlab parallel parpool.m in a python wrapper

Hi, Matlab experts:

I have a question to use local parallel pool, I set up the configuration and the code to call it: myPool = gcp('nocreate'); % If no pool, do not create new one.

myPool = gcp('nocreate'); % If no pool, do not create new one.
if isempty(myPool)
    myPool = parpool(poolsize);
end

It works in matlab script or from terminal to call it, but I have problem to call it from a python wrapper, which gave me errors:

Standard error:
MATLAB code threw an exception:
Failed to start a parallel pool. (For information in addition to the causing error, validate the profile 'local' in the Cluster Profile Manager.)
File:/Applications/MATLAB_R2016a.app/toolbox/distcomp/cluster/parpool.m
Name:/Users/junhao.wen/Hao/Project/NODDI/NODDI_toolbox_v0.9/fitting/batch_fitting.m
Line:47
File:Users/junhao.wen/Hao/Project/NODDI/scripts/noddiprocessing.m
Name:/Users/junhao.wen/test/NODDI/working_dir/NoddiMatlab/nodditoolbox/mapflow/_nodditoolbox1/pyscript.m
Line:112
File:arpool
Name:batch_fitting
Line:110
File:oddiprocessing
Name:pyscript
Line:103
File:3
Name::
Line:6

I do not know why, is it because that Matlab parallel pool does not support in python or other language wrapper??

Thanks very much.

Hao

Answer 1

[Sharan Paramasivam Murugesan]

This could be due to a bug in R2016a. Try the patch available at

https://www.mathworks.com/support/bugreports/1344615

If the patch does not help, provide the cluster logs. Log files exist on every system running in the cluster. By default on Windows these files are located in C:\temp\mdce and in /var/log/mdce on UNIX. The default location for the logs is in the file matlabroot\toolbox\distcomp\bin\mdce_def.bat on Windows and matlabroot/toolbox/distcomp/bin/mdce_def.sh on UNIX.