Learning Forum

[Ashwini Kumar]

For optimum performance of Ansys Fluent 2023 R1 on hpc6a/hpc7a instances running on Windows, we recommend the following settings in the launcher:

1. Change the MPI to msmpi from the default

and 

2. Type FLUENT_AFFINITY=0 [zero] in Environment tab

These settings will be set by default in Ansys Fluent 2023 R2.

In the CFD Pro licenses, the environment tab is disabled. Launch Fluent using the command prompt:

> "C:\Program Files\ANSYS Inc\v231\fluent\ntbin\win64\fluent" -affinity=off

when launcher opens, set the desired core count and continue:

 

One can modify the shortcut that launches Fluent as follows