[Openstack-operators] pci passthrough & numa affinity

Blair Bethwaite blair.bethwaite at gmail.com
Thu May 24 21:59:16 UTC 2018

Hi Jon,

Following up to the question you asked during the HPC on OpenStack
panel at the summit yesterday...

You might have already seen Daniel Berrange's blog on this topic:
? He essentially describes how you can get around the issue of the
naive flat pci bus topology in the guest - exposing numa affinity of
the PCIe root ports requires newish qemu and libvirt.

However, best I can tell there is no way to do this with Nova today.
Are you interested in working together on a spec for this?

The other related feature of interest here (newer though - no libvirt
support yet I think) is gpu cliques
would be really nice to have a way to set these up through Nova once
libvirt supports it.


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