Matlab Parallel pool test failure

I am using Matlab R2019b, I have setup an HPC cluster. In the validation stage, the last one (parallel pool test) fails. It shows the host IP refuses the connection. I tried some other IPs, still the same issue. Also, I have added the inbound rule in the firewall for Matlab and TCP ports 27370-27370.Also, on the left bottom corner of Matlab, starting parallel pool always fails too. I can also see my jobs sent to the HPC job manager, but I guess when the data coming back they are refused by my local IP.

[Umar]

Hi Ximeng,

To resolve the connection issue with the HPC cluster in Matlab, follow these steps:

Check Firewall Settings: Ensure that the firewall settings on both the local machine and the HPC cluster nodes allow communication on the specified TCP ports (e.g., 27370).

Verify Network Configuration: Confirm that the network configuration allows traffic between the local machine and the HPC cluster nodes. Update IP Restrictions: If there are IP restrictions in place, make sure that the necessary IPs are whitelisted for communication.

Restart Matlab and HPC Cluster: Sometimes, restarting Matlab and the HPC cluster can resolve connectivity issues.

Hope this will help resolve your problem.

[Ximeng]

Hi Umar, thanks for your answer. Could you please elaborate how to verify network configuration and update IP restrictions?

[Umar]

Hi Ximeng,

Ensure that the IP addresses and ports are correctly configured both on the cluster and your local machine. Verify that the firewall rules are allowing traffic on the specified TCP ports (e.g., 27370).

You can also check if there are any IP restrictions or access control lists that might be blocking the connection. Update these restrictions to allow communication between your local machine and the HPC cluster.

Additionally, consider testing the connection using tools like ping or telnet to diagnose connectivity problems. Make sure that the cluster nodes can communicate with each other and with your local machine.

[Ximeng]

OK, Thanks Umar for your help.

Answer 1

[Prateekshya]

Hi Ximeng,

I can see that you are facing errors in the last step of validation stage. I hope the points given by Umar has helped you to resolve the error. You may consider contacting MathWorks Technical Support if you are still facing the issue.

Thank you.