Parallel Pool sometimes failed to start

Hi all,

I had to shutdown and reopen parallel pool to avoid to fill up all the memory, but after few times I got this error

Starting parallel pool (parpool) using the 'local' profile ...

Error using parpool (line 149)

Parallel pool failed to start with the following error. For more detailed information, validate the profile 'local' in the Cluster Profile Manager.

Error in run_mcorr (line 69)

p=parpool(16)

Caused by:

Error using parallel.internal.pool.InteractiveClient>iThrowWithCause (line 676)

Failed to initialize the interactive session.

Error using parallel.internal.pool.InteractiveClient>iThrowIfBadParallelJobStatus (line 787)

The interactive communicating job failed with no message.

Of course the local profile is fine.

Could someone help me to understand why it happen and how to solve the problem?

MATLAB Version: 9.9.0.2037887 (R2020b) Update 8 running on Linux

[Raymond Norris]

I would suggest emailing Technical Support ([e-mail]).

Answer 1

[Jayant Gangwar]

Hi Davide,

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:

MATLAB\R2020b\toolbox\local\pathdef.m, then delete the pathdef.m file so that on execution of the command, the file gets recreated.