Learning Forum

[apr37]

Hello Ansys,nI have a set of Windows 10 computers all running AEDT 2021 R1 with RSM and the Intel MPI. I have successfully solved a set of model variations in a distributed manner between all of these computers, with one of them acting a a head node and the rest as compute nodes, but I have done so by disabling the Private firewall on all computers (and setting their common network as a private network).nI would like to restore the firewall in general, but I believe I need to make some firewall exceptions in order for this HPC configuration to continue to function.nCan you tell me which processes need firewall exceptions in order for this HPC configuration to work with the firewalls up?nThank you,nAlexn

[ANSYS_MMadore]

You would need to add an exception for the entire AnsysEM installation directory and the installation directory for the Intel MPI. You may also try opening the ephemeral port range if you are unable to add the exception based on the entire installation path. There are some Microsoft articles where it details the default range of ephemeral ports on Windows.n

[apr37]

Interesting, mmadore. I'm not familiar with either of these approaches (exceptions by directory or ephemeral ports). I'm only familiar with accessing Windows Defender Firewall from the Control Panel and adding exceptions based on the list found there. Sounds like I have some learning to do. Can you provide an example of how to do either of those approaches, or provide a link to some specific resource such as one of the Microsoft articles you mentioned? After a cursory search for such an article, I didn't find anything that made it obvious to me that I was reading about the right subject.nThank you,nAlexn

[ANSYS_MMadore]

https://www.tomshardware.com/news/how-to-open-firewall-ports-in-windows-10,36451.html n

[apr37]

Thanks for this resource. I will give this a try.n

[apr37]

I'm not sure if there is something different about either Ansys EDT or Windows 10 since last year, but I started off the process of determining which ports I needed to open in the firewall by just turning the firewall back on with no additional ports open. I went to start a solve, then was prompted by Windows about making a few firewall exceptions:nPMI proxy for Hydra Process Manager:nC:\program files\ansysem\ansysem21.1\win64\common\fluent_mpi\multiport\mpi\win64\intel\bin\pmi_proxy.exenProcess manager for MPI applications:nC:\program files\ansysem\ansysem21.1\win64\common\fluent_mpi\multiport\mpi\win64\intel\bin\mpiexec.exenHF3d Solver:nC:\program files\ansysem\ansysem21.1\win64\hf3d.exenI gave permission for access and then everything worked just fine. No need for the manual port opening I expected.nThank you for the resources, though. I will resort to these if I have any issues in the future.n-Alexn