Why am I getting a ''Failed to start parallel pool'' error in Matlab 2016b?

Hi, I'm trying to run some code using parallel processing in Matlab 2016b (x64) and the following error pops-up,

Error using parpool (line 103)
Failed to start a parallel pool. (For information in addition to the causing error, validate the profile 'local' in the Cluster
Profile Manager.)
...
Caused by:
    Error using parallel.internal.pool.InteractiveClient>iThrowWithCause (line 665)
    Failed to start pool.
        Error using parallel.Cluster/createCommunicatingJob (line 92)
        Too many input arguments.

Running the same piece of code using parallel processing in Matlab 2015b everything runs smooth.

Has someone experienced the same issue?

P.S.: I've uninstalled and installed Matlab several times and the same error persists.

Thanks for your help!

[Adam]

Did you try doing what it says?:

"For information in addition to the causing error, validate the profile 'local' in the Cluster Profile Manager."

I have no idea what this does though - whether it fixes things or just reports problems, but it should give some extra information.

[Miguel Santos]

Hi Adam,

Yes, when trying to validate the profile the following error appears,

com.mathworks.mvm.exec.MvmRuntimeException: Too many input arguments.
Error in ==> C:\Program Files\MATLAB\R2016b\toolbox\distcomp\cluster\+parallel\+internal\+settings\ValidationEventData.m>ValidationEventData.ValidationEventData at 204
Error in ==> C:\Program Files\MATLAB\R2016b\toolbox\distcomp\cluster\+parallel\+internal\+settings\ValidationEventData.m>ValidationEventData.createValidationStarted at 72
Error in ==> C:\Program Files\MATLAB\R2016b\toolbox\distcomp\cluster\+parallel\+internal\+validator\Validator.m>Validator.notifyValidationStarted at 224
Error in ==> C:\Program Files\MATLAB\R2016b\toolbox\distcomp\cluster\+parallel\+internal\+validator\Validator.m>Validator.startValidation at 157
Error in ==> C:\Program Files\MATLAB\R2016b\toolbox\distcomp\cluster\+parallel\+internal\+validator\Validator.m>Validator.validate at 102
Error in ==> C:\Program Files\MATLAB\R2016b\toolbox\distcomp\cluster\+parallel\+internal\+ui\AbstractValidationManager.m>AbstractValidationManager.validate at 34
Error in ==> C:\Program Files\MATLAB\R2016b\toolbox\distcomp\cluster\+parallel\+internal\+ui\ValidationManager.m>ValidationManager.validateProfile at 35

I've tried all the recommendations in this thread but they don't solve the issue either.

Answer 1

[Darshan Ramakant Bhat]

It is a known bug in MATLAB. Please try the following patch specified in the following link

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

Regards,

Darshan Bhat

[Miguel Santos]

Hi Darhsan,

Still got the same issue...

Any more comments?