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Limit vray usage of cores

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  • P Offline
    peter_shaw
    last edited by 8 Dec 2011, 13:57

    Hello everyone,
    I'm using a 4 core CPU. What has been bugging me lateley is the poor responsiveness of SU whilst rendering with vray. maxwell f.ex. has the option to limit the cores it uses.

    i didnt find an option like that in vray, but maybe there's a workaround? โ“

    edit: vray thread priority is already on lowest, doesn't do enough.

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    • T Offline
      thomthom
      last edited by 8 Dec 2011, 14:47

      No such option.
      Send a feature request to ChaosGroup.

      Thomas Thomassen โ€” SketchUp Monkey & Coding addict
      List of my plugins and link to the CookieWare fund

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      • Z Offline
        zapwizard
        last edited by 8 Dec 2011, 16:00

        I don't use V-Ray, however once your render starts you should be able to change the affinity of the V-Ray thread in the task manager.

        Press CTRL+Shift+ESC to bring up the task manager.
        Right click on the task and select "Set Affinity" then de-select some of the CPU cores.

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        • P Offline
          peter_shaw
          last edited by 9 Dec 2011, 09:38

          @zapwizard said:

          I don't use V-Ray, however once your render starts you should be able to change the affinity of the V-Ray thread in the task manager.

          Press CTRL+Shift+ESC to bring up the task manager.
          Right click on the task and select "Set Affinity" then de-select some of the CPU cores.

          the problem is that vray doesn't use a seperate thread. it seems to run inside the SU thread. so limiting the cores via affinity limits SU cores as well ๐Ÿ˜ž

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          • T Offline
            thomthom
            last edited by 9 Dec 2011, 09:40

            SU uses only 1 core at any time - so that should not be an issue.

            Thomas Thomassen โ€” SketchUp Monkey & Coding addict
            List of my plugins and link to the CookieWare fund

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            • P Offline
              peter_shaw
              last edited by 9 Dec 2011, 11:27

              @thomthom said:

              SU uses only 1 core at any time - so that should not be an issue.

              i meant that SU and the vray renderer use the same thread ID. so the windows method of limiting cores won't do anything, if i want more perfomance for modeling in SU while rendering.

              f.ex: i set max cores to 3 of 4 for the SU cpu thread -> vray uses all 3 cores, SU can't use any.

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