Yes, I'm using QXL+Spice connect to VM, and also try TeamViewer. Funny is, if I disable QXL and Spice, just using TeamViewer connect to VM, Windows can boot, but got black screen and mouse cursor glitches.
So that means I still need to find another graphic accelerated remote desktop (like RemoteFX or sth.) ? 2016-01-08 1:20 GMT+08:00 Alex Williamson <alex.william...@redhat.com>: > On Thu, 2016-01-07 at 14:28 +0800, Eddie Yen wrote: > > Hello, guys. > > > > Few days ago I got Tesla K40 and try to passthrough it into VM. > > > > Using Windows 7 as guest, and the virtual VGA is QXL. > > Every installation works fine, I don't have to add kvm=off and x-vga=on. > > Tested on CUDA and OpenCL, both works. > > > > But now is a problem, how can I make 3D acceleration works on K40? > > I knew that K40 didn't have any VGA output, so I got slow motion when > playing video and rotate 3D models in some 3D program like Autodesk. > > > > My guess is, K40's 3D acceleration only works at 3D rendering, it didn't > work in viewing 3D models. > > Does anyone have a idea? > > > > Also I found that virtio-gpu is available since QEMU 2.5+. But not work > on Windows guest yet. > > Is that can make a simple graphic accleration on Windows? > > How are you connecting to the VM, just the QXL display? Rendering into > the emulated graphics framebuffer is possible, but you lose most of the > performance. I've never used a Tesla personally, but with GRID, which > is also a headless GPU, you'll generally want to disable the emulated > graphics (happens automatically with win7) and use guest-based remote > desktop solutions to access the accelerated desktop. Minimally a vnc > server running inside the guest, though that burns a lot of CPU. There > are more performant commercial solutions. > > virtio-gpu is a different beast. Once we have windows drivers there > you'll be able to get GPU offload from any host GPU supporting gallium, > but it's not clear when that driver will come or how much that will > enable games. You certainly wouldn't have access to CUDA or PhysX or > GPU specific SDKs in the guest using virtio-gpu. Thanks, > > Alex >
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