Starting with R2019b, there is a utility script called "checkLicensing" available inside the MATLABROOT\toolbox\parallel\bin for MATLAB Parallel Server. The utility script performs a license check for MATLAB Parallel Server workers by starting a parallel worker and outputting the version information or any license errors to a logfile.
The recommended usage would be to run the following from a cmd or terminal prompt within your MATLABROOT\toolbox\parallel\bin folder. Be sure to use the -logfile flag to point to directory that you would have permissions for:
Windows
checkLicensing.bat -logfile C:\Temp\parallelLicense.log
For other input flags and usage:
checkLicensing.bat -h
Linux
./checkLicensing -logfile /tmp/parallelLicense.log
For other input flags and usage:
./checkLicensing -h
Below is an example of the output you may see after running ./checkLicensing:
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MATLAB Version: 24.1.0.2537033 (R2024a)
MATLAB License Number: 123456
Operating System: Linux 5.15.146.1-microsoft-standard-WSL2 #1 SMP Thu Jan 11 04:09:03 UTC 2024 x86_64
Java Version: Java 1.8.0_202-b08 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
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MATLAB Version 24.1 (R2024a)
MATLAB Parallel Server Version 24.1 (R2024a)
Parallel Computing Toolbox Version 24.1 (R2024a)
NOTE: For R2019a and prior, refer to the following article for the old workflow:
How can I use 'dmlworker' to test the licensing and installation for the worker nodes in my MATLAB Parallel Server cluster?
