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It is possible to use VT-D to dedicate a GPU to a VM unter ESXi. Here are the constraints:
- Nvidia GPU does not work as far as I know, only AMD
- Not every AMD GPU might work
- The VM could not get more than 4GB of ram when VMDP was enabled, but this limitation might have been removed
- The whole memory needs to be reserved for the VM on the host. Dynamic memory allocation cannot be used
- You will lose the snapshot, vmotion & co features for the VM that has the GPU
I did that a few years ago to get a virtual HTPC with XBMC. It worked OK, but overtime crappy AMD driver kept crashing (seg fault),
You can have as much ram as you want, you just have to set the PCI hole. Snapshots work, but only when the VM is powered off. I have been able to pass through just about any Radeon I've tried.
Currently I have 4 SteamOS vm's running simultaneously on ESXi 5, Starbound plays just fine.
I would like to try streaming from another VM on the same ESXi, using virtual nics & switches entirely.
eric, I'm not familiar with the K4000, does that mean you have a GPU assigned per SteamOS VM?
Bummer is that that particular GPU seems to be only a little better than my processor with HD4400 graphics.
I'm also open to suggestions for a better card that fits in a single slot (the other slot is taken by a network card).
http://www.newegg.com/Product/Product.aspx?Item=N82E16814121799
Host: Fedora 20, Intel 3770 CPU, host uses Intel GPU - HD3000
Guest: Windows 7, 4 cores, 16GB RAM, Nvidia Quadro FX3800 GPU
I can game in the guest fine normally. However, when I try to stream from there to my laptop downstairs I get only a black screen. Not sure if I'm blocking traffic on my network or what's going on. If I get it going, I'll post it here.
Doom (this one just crashes)
Titan Quest
Skyrim
Gemini Rule
Before I say this won't work in a VM with VT-d, I really want to see it work normally so I know what is NORMAL and what is NOT normal. I'll have to pick this up another day, time for me to cook the kiddo some food. I suspect kids need to eat or something like that.
My SteamBoxes are VM's with Radeon HD 6450's assigned to them.
I just built a win7 VM using one of the HD 6450's, and it's currently downloading Dota so I can try streaming to one of the steamboxes.
http://wiki.xen.org/wiki/Xen_VGA_Passthrough#Status_of_VGA_graphics_passthru_in_Xen
So yes, you can definitely run Steam from a virtual machine with GPU passthrough enabled, and streaming will work.
Host: Fedora 20, KVM hypervisor, Intel HD3000 GPU on an Intel 3770 (non-K) CPU
-- remember, only the NON-K version of Intel's CPUs support VT-d, but you cannot overclock them
Guest: Windows 7, Quadro FX3800 passed through
My remote system: Laptop that overheats way too much to play Skyrim
Sweetness.