[openstack-dev] [cyborg] [nova] Cyborg quotas

Chris Friesen chris.friesen at windriver.com
Mon May 21 06:27:10 UTC 2018

On 05/19/2018 05:58 PM, Blair Bethwaite wrote:
> G'day Jay,
> On 20 May 2018 at 08:37, Jay Pipes <jaypipes at gmail.com> wrote:
>> If it's not the VM or baremetal machine that is using the accelerator, what
>> is?
> It will be a VM or BM, but I don't think accelerators should be tied
> to the life of a single instance if that isn't technically necessary
> (i.e., they are hot-pluggable devices). I can see plenty of scope for
> use-cases where Cyborg is managing devices that are accessible to
> compute infrastructure via network/fabric (e.g. rCUDA or dedicated
> PCIe fabric). And even in the simple pci passthrough case (vfio or
> mdev) it isn't hard to imagine use-cases for workloads that only need
> an accelerator sometimes.

Currently nova only supports attach/detach of volumes and network interfaces. 
Is Cyborg looking to implement new Compute API operations to support hot 
attach/detach of various types of accelerators?


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