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bge
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parpool() (R2014a) fails on Linux

Asked by bge
on 17 Jul 2015
Latest activity Edited by Eric Sillekens on 4 Oct 2017
When executing the command parpool() from the MATLAB prompt, with or without arguments, the following error occurs:
Undefined variable "com" or class "com.mathworks.toolbox.distcomp.pmode.SessionInfo.NULL_SESSION_INFO".
Error in parpool (line 96) sessionInfo = com.mathworks.toolbox.distcomp.pmode.SessionInfo.NULL_SESSION_INFO;
The error message seems to be helpless. How can I fix it?

  2 Comments

This looks like an installation problem. I suggest contacting MathWorks support.
Did you start matlab with the -nojvm option, I got the same error when staring matlab using "matlab -nodisplay -nojvm"and and starting matlab using "matlab -nodisplay" solved it for me.

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2 Answers

Answer by Raphael
on 9 Dec 2015

I had the same problem when using (as documented here) :
matlab -nojvm -nodisplay -nosplash
But I manage to make it work without the -nojvm
matlab -nodisplay -nosplash

  1 Comment

Parallel Computing Toolbox requires the JVM...

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Answer by Richa Gupta on 20 Jul 2015

Can you provide the complete error message? Are you able to validate the profile successfully? Also, did you start MATLAB with -"nojvm" option?

  2 Comments

Here are more details with R2015a. The following is a screen capture:
>> p=parpool('local',2)
Starting parallel pool (parpool) using the 'local' profile ...
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 667)
Failed to initialize the interactive session.
Error using parallel.internal.pool.InteractiveClient>iThrowIfBadParallelJobStatus (line 768)
The interactive communicating job failed with no message.
>> ver
----------------------------------------------------------------------------------------------------
MATLAB Version: 8.5.0.197613 (R2015a)
MATLAB License Number: ••••••
Operating System: Linux 2.6.32-504.12.2.el6.x86_64 #1 SMP Wed Mar 11 22:03:14 UTC 2015 x86_64
Java Version: Java 1.7.0_60-b19 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
----------------------------------------------------------------------------------------------------
...
Parallel Computing Toolbox Version 6.6 (R2015a)
...
Have you tried to validate your cluster profile?

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