Matlab Parallel pool test failure

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Ximeng 2024-6-28

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https://ww2.mathworks.cn/matlabcentral/answers/2132891-matlab-parallel-pool-test-failure

回答： Prateekshya 2024-7-8

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.

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Umar 2024-6-30

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 2024-6-30

OK, Thanks Umar for your help.

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Prateekshya 2024-7-8

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https://ww2.mathworks.cn/matlabcentral/answers/2132891-matlab-parallel-pool-test-failure#answer_1482436

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.