[ale] VMs sharing native GPU

[Kyle Brieden]

Did some digging around, and it looks like the only GPUs that support 
virtualization like what we're talking about are nVidia's Tesla series 
cards, which can be anywhere from $2,000 to upwards of $20,000 per card. 
  Also, there's a yearly licensing scheme to go with it.  So no 
consumer-grade cards can be chunked down like what I was thinking.  :(

https://docs.nvidia.com/grid/6.0/grid-vgpu-release-notes-red-hat-el-kvm/index.html
https://www.nvidia.com/en-us/design-visualization/technologies/virtual-gpu/

Bummer, that would have been a TON of fun to play with.  I have 2 "one 
day" goals:
1. Multiple-person gaming rig.  Would need 2 gfx cards to PCI 
passthrough to each windows VM.
2. A linux box running a hypervisor with a monitor and keyboard, then 2 
VMs, one windows and one macos, running on it.  PCI passthrough a card 
to each VM so that the monitors on my desk are each respective desktop.  
Then pass USB ports to each VM and have a mouse/keeb on a switch.  That 
or if I could just get Synergy to run on that, it would be perfect.

And because I know you're thinking it, the answer to "Why?" is "Because 
I can."  It would be fun for me and something to brag about to nerds 
like us. :D

---
Very respectfully,
Kyle Brieden

On 09-05-2018 12:16, Kyle Brieden via Ale wrote:
> I did not know about this!  I'm definitely interested, though.  I'll
> go dig on it and if I find anything juicy, I'll put it back on the
> list.  This is really exciting :D
> 
> ---
> Very respectfully,
> Kyle Brieden
> 
> On 08-05-2018 13:14, Jim Kinney wrote:
>> There's some new NVidia stuff that supports virtual GPUs. It works
>> similar to have VMs work, carve a big system into smaller systems.
>> It's supported in Ovirt so it's supported by KVM. It does require
>> rather new GPU and cuda 9+
>> 
>> On Tue, 2018-05-08 at 12:52 -0400, Kyle Brieden via Ale wrote:
>> 
>>> KVM/QEMU and Xen both support PCI Passthrough, but it's been my
>>> understanding that PCI Passthrough assigns that resource directly to
>>> the
>>> guest/DomU.  Nothing, not even the hypervisor/Dom0 has access to it
>>> anymore.  I don't think it'll be possible to "share" a PCI device
>>> like
>>> that with multiple VMs running at the same time.
>>> 
>>> ---
>>> Very respectfully,
>>> Kyle Brieden
>>> 
>>> On 08-05-2018 09:17, Dow Hurst via Ale wrote:
>>>> Which hypervisor is best for PCI-E passthrough? I'd like to setup
>>>> a shared GPU on a VM server with a virtualized Ubuntu and a MS Win
>>>> instance that could share a GPU for accelerated graphics. I'm just
>>>> looking to get pointed in a direction that is open source, but
>>>> known to work. Sincerely, Dow ⚛Dow Hurst, Research Scientist 340
>>>> Sullivan Science Bldg. Dept. of Chem. and Biochem. University of
>>>> North Carolina at Greensboro PO Box 26170 Greensboro, NC
>>>> 27402-6170 _______________________________________________ Ale
>>>> mailing list Ale at ale.org https://mail.ale.org/mailman/listinfo/ale
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>>>> http://mail.ale.org/mailman/listinfo
>>> 
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>> 
>> --
>> 
>> James P. Kinney III Every time you stop a school, you will have to
>> build a jail. What you gain at one end you lose at the other. It's
>> like feeding a dog on his own tail. It won't fatten the dog. - Speech
>> 11/23/1900 Mark Twain http://heretothereideas.blogspot.com/
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