Use a separate GPU for encoding

[xorrvin]

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Hi,

I'm evaluating a Proxmox setup and I'm interested in a hybrid setup, where one GPU is used for rendering and another for streaming. It sounds good in theory when both GPUs are in the same VM, but in my case I'd like to reuse streaming GPU and share it between containers, so it should stay on the host.

In this case, gaming VM would only have one GPU inside of it. I wonder if it's possible to have a raw capture (without encoding), and then on the host there's Sunshine encoder running in the container, which can access host GPU with Docker device sharing and stream it to a client. Since it'll be VM-Host networking, it can run at any speed, so raw image bandwidth shouldn't be an issue.

Of course there'll be network and memory copying overhead, but this would allow combining strong sides of different GPUs (like QuickSync for encoding and AMD/NVIDIA for gaming).

What do you think?