Nouveau - Feb 2017 - A request for Virtual GPU based on Nouveau

Hi,

I’m a developer from Huawei Technologies Co.,Ltd. China. I’m working on GPU
Virtualization.
I found some academic papers on google which describe how to virtualize GPU on
Cloud based on Nouveau, Such as < TimeGraph: GPU Scheduling for Real-Time
Multi-Tasking Environments >  <Gdev: First-Class GPU Resource Management
in the Operating System> written by Ph.D Shinpei Kato.
I know the nouveau project aims to build high-quality, free/libre software
drivers for nVidia cards<https://nouveau.freedesktop.org/wiki/CodeNames/>.
Maybe the nouveau project developers can do something to help GPU
Virtualization. So I’d like to ask whether there is the possibility of
cooperation on GPU Virtualization between Huawei and the nouveau project.
Maybe there is another way for cooperation. But I don’t know how. Or you can
give some advices to us on GPU Virtualization based on nouveau. That will be
grateful. I’m looking forward to you reply.

Best
Jay

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Hi Jay,


On 25/02/17 14:39, Zhengjie (PARC) wrote:
>
> I know the nouveau project aims to build high-quality, free/libre
> software drivers for nVidia cards
> <https://nouveau.freedesktop.org/wiki/CodeNames/>. Maybe
> the nouveau project developers can do something to help GPU
> Virtualization. So I’d like to ask whether there is the possibility of
> cooperation on GPU Virtualization between Huawei and the nouveau project.
>
> Maybe there is another way for cooperation. But I don’t know how. Or
> you can give some advices to us on GPU Virtualization based on
> nouveau. That will be grateful. I’m looking forward to you reply.
>
I'm no kernel dev, but it's worth mentioning a lot of infrastructure for
GPU virtualisation was merged in 4.10; specifically the GVT
functionality written by Intel which makes use of the VFIO mediated
device framework which itself landed in 4.9, I believe (I could be
mistaken). It may be worth while asking on the intel-gvt-dev list [1]
too, as we would surely all benefit from having standard interfaces for
virtual GPUs regardless of hardware vendor.

You may wish to have a look at the following files & directories in the
kernel source tree:

Documentation/vfio-mediated-device.txt
drivers/vfio/mdev/
drivers/gpu/drm/i915/gvt/

None of this is specifically related to nouveau, but there's certainly
some common infrastructure (mdev) that could be utilised.


[1] https://lists.freedesktop.org/mailman/listinfo/intel-gvt-dev


Cheers,
Jack


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On 25/02/17 05:39, Zhengjie (PARC) wrote:
> Hi,
>
> I’m a developer from Huawei Technologies Co.,Ltd. China. I’m working on
> GPU Virtualization.
>
> I found some academic papers on google which describe how to virtualize
> GPU on Cloud based on Nouveau, Such as < TimeGraph: GPU Scheduling for
> Real-Time Multi-Tasking Environments >  <Gdev: First-Class GPU
Resource
> Management in the Operating System> written by Ph.D Shinpei Kato.
>
> I know the nouveau project aims to build high-quality, free/libre
> software drivers for nVidia cards
> <https://nouveau.freedesktop.org/wiki/CodeNames/>. Maybe
> the nouveau project developers can do something to help GPU
> Virtualization. So I’d like to ask whether there is the possibility of
> cooperation on GPU Virtualization between Huawei and the nouveau project.
>
> Maybe there is another way for cooperation. But I don’t know how. Or you
> can give some advices to us on GPU Virtualization based on nouveau. That
> will be grateful. I’m looking forward to you reply.
>
Nouveau's design is meant for allowing virtualization, so you should not 
have too much trouble getting something to work, provided you can make 
hypercalls. Check out NVIF in the nouveau's source.

Martin