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    Passthrough GPU remote graphics

    Scheduled Pinned Locked Moved Compute
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    • F Offline
      foreverska
      last edited by

      I have some experience with virtualization and GPU passthrough. When I've done it in a desktop rig it was with commercial GPUs and you'd connect a display to the GPU.

      Question up front:
      How do I "connect a display" to a passthrough datacenter GPU?

      Description of steps taken:
      I now have a second hand rig and I've unfortunately run up against the truth of Nvidia vGPUs. So before I shell out for a professional license I've decided to try to get XCP-ng to work in passthrough. I have an Ubuntu 18.04 server with GPU enabled Tensorflow/Keras. This was one goal of the server. The next is to setup a server based CAD machine. I've tried and I can get Debian/Ubuntu running with a GPU that nvidia-smi can enumerate. But it doesn't seem to be used for graphics acceleration. I generally access the machines through Xen Orchestra right now.

      Rig:
      Supermicro 2027GR-TRF w/ 2x E5-2680v2
      64GB Ram and 4.5TB SSD array
      Nvidia Tesla K20Xm and GRID K2
      XCP-ng and XO
      Guests: Debian family Linux machines

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      • A Offline
        axel @foreverska
        last edited by

        @foreverska did you use 2 Grafics ?
        I try some two with one and internal was not working but with a second small one it was fine or try a other PCIe slot first

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        • F Offline
          foreverska @axel
          last edited by

          @axel I have two graphics cards in the machine but I only pass one at a time to the VM. Either one can be seen by the guest, just not used for graphics as far as I can tell.

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          • A Offline
            axel @foreverska
            last edited by

            @foreverska witch one do you find with XCP?

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