How to passthrough multiple GPU in one Guest VM
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Hi,
I have a host that has 8 NVIDIA Tesla K80 GPUs. Whenever I launch a VM, I can passthrough 1 GPU for each VM. I wanted to passthrough more than 1 GPU to a guest VM, is that possible?
Thanks.
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This is called "vGPUs"
https://xcp-ng.org/docs/cli_reference.html#gpu-commands
I'm not entirely sure it works out of the box in XCP-ng due to some package license restriction with nvidia/citrix.
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@olivierlambert thanks for the info. I tried the xe cli commands and tried adding another GPU in a VM that already has a GPU, but its not allowing me. I'm getting
Cannot create a virtual GPU that is incompatible with the existing types on the VM.. Seems if the only available vgpu-type is passthrough, you cannot add more than one gpu in that VM. -
That because maybe we don't have the "right" package. I'm curious: can you test with Citrix Hypervisor?
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I think Citrix will require me a license to do GPU passthrough.
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You might get a free trial to play with it
