Why do I receive a segmentation violation when starting a worker for the MATLAB Distributed Computing Engine?

I have configured the mdce service on my Red Hat machine and have verified that mdce is running. When starting a worker on the Red Hat machine, I receive a segmentation violation in the worker log containing the followin stack trace:

Stack Trace:

[0] libmwmpath.so:mpCombinePathName(0x401885a0, 0, 0x40172a60 "toolbox_cache-7.0.1-glnx86.xml", 0) + 32 bytes

[1] libmwservices.so:svGetToolboxCacheFile(0, 0, 0, 0xbfffd210) + 96 bytes

[2] libmwbridge.so:mnRunLoginScript(0x4026fbb0, 0x08672720, 0xbfffd338, 0x40266b54) + 641 bytes

[3] libmwbridge.so:mnRunPathDependentInitialization()(0, 0x4026fe64, 335, 0xbfffd2c4) + 37 bytes

[4] libmwmcr.so:mcr_init_handler_cpp(mcrInstance*, mcrOptionsInternal*, MfileReader*, bool volatile*, bool volatile*)(0x0809f260, 0x0809d240, 0x0809f288, 0xbfffd36f) + 492 bytes

[5] libmwmcr.so:mcrInstance::mcrInstance(mcrOptions&, MfileReader*)(0x0809f260, 0xbfffd600, 0x0809f288, 0xbfffdc4c) + 481 bytes

[6] MATLAB:mcrMain(int, char**)(11, 0xbffff6b4, 0xbffff668, 0x4202b319) + 239 bytes

[7] MATLAB:main(11, 0xbffff6b4, 0xbffff6e4, 0x400124b8) + 23 bytes

[8] MATLAB:data_start(0x0804a7c4, 11, 0xbffff6b4, 0x0804a3d8) + 72444 bytes

Answer 1

[MathWorks Support Team]

This error might occur when the mjs service is configured to start at boot time.

To start the mjs manually you must run

 $MATLABROOT/toolbox/parallel/bin/mjs start

To allow the mjs service to start properly at boot time, open the mjs script in your $MATLABROOT/toolbox/parallel/bin directory, where $MATLABROOT is your MATLAB installation directory, and add the following two lines to the beginning of the mjs script:

HOME=/ 
export HOME

• 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 located in $MATLAB/R20XXx/toolbox/distcomp/bin for R2019a and earlier.