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PCIe passthrough is great. Still a few kernel bugs to work out, but when it's working it's magnificent.

Linux/OSX/Windows VM with GPU passthrough working here. The main system can be up all the time with a "reboot" between VM's taking a few seconds.

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We have been using KVM GPU passthrough of NVIDIA Tesla cards for machine learning two years now. Works fantastically and makes such machines much easier to maintain.

My workstation is a Ryzen 1700x running Ubuntu. It also runs two Windows gaming machines for me and my kids. GPU passthrough is pretty much painless, and since the NPT bug fix, they are very snappy.

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