Error when retrieving Results from Large Time History Analysis rst (19GB)

lucasrv

Hi all, thank you in advance for your attention and the support I am sure you will provide. I am new to using pyANSYS tools and started by retrieving displacements (and/or accelerations) from a structural modal superposition (1200 modes) THA. The rst file generated is kind of 19GB. I am retrieving results correctly in Workbench.
The thing is that I consistently get an weeor when trying to select alls sets by all_set=True . I did not face any trouble if picking a particular set_id, see for instance below:

Try to read results for all_sets -> it consistently gives an error:

Try to read results for, say 1000 sets, it seems to work (but it does not work for a range 1:4096 which is all_sets=True)

Additional information (package version installed)
ansys-dpf-core 0.13.0
ansys-dpf-post 0.9.0

Any help/guidance is hihgly appreaciated!
Lucasrv

lucasrv

*Highly

Rajesh Meena

@lucasrv

This problem is highly likely due to mismatch between ansys-dpf-core client and the dpf server you are using. Please check the compatibility here (https://dpf.docs.pyansys.com/version/stable/getting_started/compatibility.html#operating-system). The dpf server is picked from ansys unified installation i.e workbench, by default.

If you cannot upgrade to latest workbench then please use dpf standalone server (https://dpf.docs.pyansys.com/version/stable/getting_started/dpf_server.html#install-dpf-server). This problem should be resolved.

lucasrv

@Rajesh Meena Thank you so much for your answer. I checked what your first proposed. I am running ANSYS 2023 R2. See below excerpts from the link you provided pairing server and ansys-dpf-core client and the version I have installed


It is my understading I got the right settings per the first screenshot and link you provided, but it is not working.
For the second option (Standalone server), should I install something in my computer? This is run by our IT team. Any other option (way) I can start a server which is not the default one?
Thank you again for your answer!
Lucas

Rajesh Meena

@lucasrv standalone server is just like a python library. You install it in your python virtual environment. You will not need IT permissions for this. Make sure you define environment ANSYS_DPF_ACCEPT_LA=Y.

Follow steps here:

https://dpf.docs.pyansys.com/version/stable/getting_started/dpf_server.html#install-dpf-server

lucasrv

Thank you again @Rajesh Meena . I will try that althought it will took me some time to get the permission to add/edit environment variables, so I will get back to the chat with the result as soon as possible.