Why do I receive the error "Invalid maximum heap size: -Xmx%WORKE​R_MAXIMUM_​MEMORY%" in my MDCE log file?

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Why do I receive the following error in my MDCE log file?
Invalid maximum heap size: -Xmx%WORKER_MAXIMUM_MEMORY%

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MathWorks Support Team
MathWorks Support Team am 6 Dez. 2019
Bearbeitet: MathWorks Support Team am 5 Dez. 2019
The MDCE log file is found in the location below:
Windows:
C:\TEMP\MDCE\log\mdce-service.log
Mac/Linux:
/var/log/mdce/mdce-service.log
You will get this error due to using an older version of the mjs_def file where it does not contain either one or more of the maximum memory lines. These lines tell the mdce process to send a particular amount of memory through to the JVM.
Your mjs_def file is located here:
$MATLABROOT\toolbox\parallel\bin\mjs_def
Where $MATLABROOT is the installation directory of MATLAB.
*To resolve this issue, make sure that the following lines are inside of your mjs_def <file:*>
# WORKER_MAXIMUM_MEMORY: The maximum heap size of the all worker java
# process.
WORKER_MAXIMUM_MEMORY="1024m"
and
# JOB_MANAGER_MAXIMUM_MEMORY: The maximum heap size of the job manager java
# process.
JOB_MANAGER_MAXIMUM_MEMORY="1024m"
After changing this file, make sure you restart your mdce processes to start using this change.
  • NOTE: Starting in R2019a the following name changes occurred:
  • MATLAB Distributed Computing Server was renamed to MATLAB Parallel Server
  • mdce_def was renamed to mjs_def
  • mdce binary was renamed to mjs
  • mjs_def.bat file is in $MATLAB/R20XXx/toolbox/distcomp/bin for R2019a and earlier.

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