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[FLUENT] Ensuring Processor Affinity is Set

    • Jacob Ellis
      Subscriber

      I read that making sure processor affinity is set is helpful for speedup. But it seems random (with the same number of processors) when I am able to see the message of sucessful processor affinity set. Is there anything I can do? I already close out all unwanted programs and use less than the total physical cores on my machine (FLUENT 2023R2, Windows OS, Intel i9-12900k, 64GB RAM).

    • Aras karimi
      Subscriber

      Hello
      I also have your exact operating system, however, when I compare it with a system with CPU i7 4770K (4 cores), its speed is not very high and there is a slight difference.
      Do you also have this problem?
      Do I have to do anything special?

      When I open Fluent, I get this message in the Fluent console. Do you also receive this message?

       

      Note: Rank = 0: Process affinity not being set (6).
      Note: Rank = 1: Process affinity not being set (6).
      Note: Rank = 2: Process affinity not being set (6).
      Note: Rank = 3: Process affinity not being set (6).
      Note: Rank = 4: Process affinity not being set (6).
      Note: Rank = 5: Process affinity not being set (6).
      Note: Rank = 6: Process affinity not being set (6).
      Note: Rank = 7: Process affinity not being set (6).
      Note: Rank = 8: Process affinity not being set (6).
      Note: Rank = 9: Process affinity not being set (6).
      Note: Rank = 10: Process affinity not being set (6).
      Note: Rank = 11: Process affinity not being set (6).
      Note: Rank = 12: Process affinity not being set (6).
      Note: Rank = 13: Process affinity not being set (6).
      Note: Rank = 14: Process affinity not being set (6).
      Note: Rank = 15: Process affinity not being set (6).

    • Jacob Ellis
      Subscriber

       

      Yes. That is the reason for my question. I get the same behavior and am wondering how to get the process affinity to set. 

       

      • Aras karimi
        Subscriber

        What is the meaning of this message? I don't get it.

        Is your Run Fluent speed low?

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