[nova] GPU VMs using MIG?

António Paulo antonio.paulo at cern.ch
Tue Jun 15 11:39:18 UTC 2021


I see, thank you for the reply. Even if it does not make sense for MIG
to be supported/documented upstream if someone does come across
MIG+OpenStack not backed by virtual GPUs do ping me please :-) I'll be
trying to get this working when some cards arrive.

Cheers,
António

On 14/06/21 18:01, Sylvain Bauza wrote:
> 
> 
> On Mon, Jun 14, 2021 at 4:37 PM António Paulo <antonio.paulo at cern.ch
> <mailto:antonio.paulo at cern.ch>> wrote:
> 
>     Hi!
> 
>     Has anyone looked into instancing VMs with NVIDIA's Multi-Instance GPU
>     (MIG) devices [1] without having to rely on vGPUs? Unfortunately, NVIDIA
>     vGPUs lack tracing and profiling support that our users need.
> 
>     I could not find anything specific to MIG in the OpenStack docs but I
>     was wondering if doing PCI passthrough [2] of MIG devices is an option
>     that someone has seen or tested?
> 
>     Maybe some massaging to expose the MIG as a Linux device is required
>     [3]?
> 
> 
> Nividia MIG feature is orthogonal to virtual GPUs and hardware dependent.
> As the latter, this is not really something we can "support" upstream as
> our upstream CI can't just verify it.
> 
> Some downstream vendors tho have work efforts for trying to test this
> with their own solutions but again, not something we can discuss it here.
> 
>     Cheers,
>     António
> 
>     [1] https://docs.nvidia.com/datacenter/tesla/mig-user-guide/
>     <https://docs.nvidia.com/datacenter/tesla/mig-user-guide/>
>     [2] https://docs.openstack.org/nova/pike/admin/pci-passthrough.html
>     <https://docs.openstack.org/nova/pike/admin/pci-passthrough.html>
>     [3]
>     https://docs.nvidia.com/datacenter/tesla/mig-user-guide/#device-nodes <https://docs.nvidia.com/datacenter/tesla/mig-user-guide/#device-nodes>
> 



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