Threadripper workstation build w/ hardware GPU passthrough - Advice needed

Hardware Build a PC
21

The 1080ti wont come out of sleep for Passthrough. Works ok for Vega.

MSI are working with me on it though so that’s awesome of them :-p

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Have you had a chance to try a Polaris card yet? I think you mentioned somewhere (reddit?) that was going to be attempted IIRC.

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It seems nobody has yet mentioned the Nested Page Tables bug with Zen CPUs and Linux KVM. When using GPU passthrough on KVM with a recent AMD CPU, the performance in 3D applications suffers greatly unless you disable NPT. Unfortunately, though, the overhead of emulating the page tables in software creates a relatively large CPU bottleneck inside of your VMs. I’ve run into this issue on my 1800X and wouldn’t really recommend anybody use Zen CPUs with Linux KVM for GPU passthrough until this is resolved. I’ve heard that it works fine with VMWare and Xen, though, so if you plan on using those hypervisors it’s probably fine.

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I thought that Polaris didn’t suffer from bus reset. (at least some of them)

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It’s not supposed to, but comments like this one over at the AMD forums make me think that everything needs to get retested. :frowning: