Why am I unable to validate or use parpool with Microsoft HPC Pack?

I set up and configured an MATLAB Parallel Server cluster that consists of Windows machines running HPC.  My client machine is using the built in profile for HPC  and I can validate all stages except parpool.

When running the validation test, I see the following error output:

Stage: Parallel pool test (parpool)Status: FailedDescription:The validation stage encountered a MATLAB exception.Command Line Output:(none)Error Report:The interactive communicating job errored with the following message: MatlabPoolPeerInstance{fUuid=b524f061-3dba-4299-aebe-63bd3a6455e3, fGroupUuid=823ea93c-df6a-4972-817c-594370e08154, fLabIndex=1, fNumberOfLabs=240} was unable to connect to hostname-05/101.101.101.11:27370 due to a JVM IOException: nullDebug Log:(none)

Answer 1

[MathWorks Support Team]

This error will occur if you do not have the necessary port range open on your client machine.  

On the client machine, where you will be submitting jobs from, you need to have the TCP port range 27370 through 27470 open. 

If you need to modify the port range that Parallel Computing Toolbox uses, please refer to this documentation: 

Required ports for Third-Party Schedulers

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