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NVIDIA Posts New OpenGL Extensions For Multi-GPU Rendering

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  • NVIDIA Posts New OpenGL Extensions For Multi-GPU Rendering

    Phoronix: NVIDIA Posts New OpenGL Extensions For Multi-GPU Rendering

    OpenGL is still evolving and days ahead of SIGGRAPH 2019, NVIDIA has published a set of new GL extensions for improving multi-GPU rendering...

    http://www.phoronix.com/scan.php?pag...nGL-Multicast2

  • #2
    I'm not sure I understand why they're suddenly taking another interest in multi-GPU rendering. I kinda assumed they just gave up on it. Not that I'm complaining.

    And yes, I know about NVLink and multi-GPU compute, but that's typically for workstations and servers.

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    • #3
      Originally posted by schmidtbag View Post
      I'm not sure I understand why they're suddenly taking another interest in multi-GPU rendering. I kinda assumed they just gave up on it. Not that I'm complaining.

      And yes, I know about NVLink and multi-GPU compute, but that's typically for workstations and servers.
      My guess would be to try to take away some of AMD's Linux thunder as of late by trying to provide a feature for their GPUs that AMD doesn't have on Linux.

      Michael &tildearrow
      Found a typo:
      NVIDIA will be coming wit similar

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      • #4
        Anyone interested in multi-GPU rendering should use Vulkan, but it's not supported in Vulkan drivers on Linux either.

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        • #5
          Originally posted by shmerl View Post
          Anyone interested in multi-GPU rendering should use Vulkan, but it's not supported in Vulkan drivers on Linux either.
          Are you saying multi-GPU rendering on Vulkan on Linux doesn't work? Or doesn't work with a particular driver?

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          • #6
            Originally posted by cl333r View Post

            Are you saying multi-GPU rendering on Vulkan on Linux doesn't work? Or doesn't work with a particular driver?
            Mesa doesn't support VK_KHR_device_group* extensions yet. No idea about Nvidia blob.

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            • #7
              Originally posted by shmerl View Post

              Mesa doesn't support VK_KHR_device_group* extensions yet. No idea about Nvidia blob.
              Wasn't this a requirement for Vulkan 1.1?

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              • #8
                Originally posted by aufkrawall View Post
                Wasn't this a requirement for Vulkan 1.1?
                So Mesa doesn't support everything from 1.1 yet.

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                • #9
                  Originally posted by shmerl View Post

                  So Mesa doesn't support everything from 1.1 yet.
                  Huh, indeed. But it's supported by amdvlk though (both proprietary and open).

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                  • #10
                    Originally posted by aufkrawall View Post
                    Huh, indeed. But it's supported by amdvlk though (both proprietary and open).
                    I didn't check. Did you see code implementation for it? Mesa reports these extensions too, but it's just a stub.

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