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Vray uses only 64 threads on LC build on 128 thread machine

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  • Vray uses only 64 threads on LC build on 128 thread machine

    Hello,
    iam using the 3990x threadripper and i am getting log messages that LC is not utilizing more than 64 threads. Is it possible to tweak this parameter somewhere please?
    thank you!
    M
    Martin
    http://www.pixelbox.cz

  • #2
    Interesting. Do all the cores work in other software? Is there a BIOS setting to enable them? Have you tried:

    renderers.current.system_numThreads=0

    In the listner? Or perhaps numthreads=128

    Comment


    • #3
      Hello,

      Are you using the old KD tree mode of the light cache - it is limited to 64 threads and there is no setting for that. If you use the new Hash Map light cache - it uses all the available threads. (Docs)

      Best regards,
      Yavor
      Yavor Rubenov
      V-Ray for 3ds Max developer

      Comment


      • #4
        What Yavor said, the light cache supports more than 64 threads only when using the new hash-map based method.

        Best regards,
        Vlado
        I only act like I know everything, Rogers.

        Comment


        • #5
          Aaah ok, there were old setting in the file thanks a lot guys!
          Martin
          http://www.pixelbox.cz

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