Problem with starting parpool

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Frédéric Godin
Frédéric Godin 2017-12-16
评论： Walter Roberson 2025-7-4
Hello community,
I tried to run a code which worked for a 2011 version of Matlab. Initially, the code used matlabpool to pool the cores. Now I had to replace matlabpool by parpool for the newest version of Matlab. However, I get the following message error:
Caused by: Error using parallel.internal.pool.InteractiveClient>iThrowWithCause (line 675) Failed to start pool. Error using parallel.Job/addClientPath (line 862) Invalid value specified for property 'NumPathsToAppend'. Allowed values are positive integer scalars.
What am I doing wrong?
Best regards.

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回答（1 个）

Darshan Ramakant Bhat
This error may occur due to inaccessibility of pathdef.m for MATLAB. Please try the following workaround
Try running the following commands in the MATLAB Command Window:
>> restoredefaultpath >> savepath
Once done, restart MATLAB and then try to start a parallel pool again. If there is an error in accessing the file:
C:\Program Files\MATLAB\R2016b\toolbox\local\pathdef.m, then delete the pathdef.m file so that on execution of the command, the file gets recreated.

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