Sorry, my point about numad being libvirt specific was that I couldn't find 
references to other hypervisors using numad for their placement.  I recognise 
that it's not _tied_ to libvirt but the reality seems to be that only libvirt 
uses it.

Xen, for example, can't use numad because dom0 might only know about a subset 
of the system - it'd make sense for dom0 to only be placed on a single numa 
node. Xen does of course have its own automatic placement to take account of 
the numa nodes - I assume this is also true of other hypervisors.

Perhaps my question is a broader one about whether we want Nova to have some 
influence in the pinning rules, or if we just want to ignore numa placement and 
let each hypervisor to do it in its own way?

Bob

-----Original Message-----
From: Daniel P. Berrange [mailto:[email protected]] 
Sent: 21 June 2013 10:55
To: OpenStack Development Mailing List
Subject: Re: [openstack-dev] Efficiently pin running VMs to physical CPUs 
automatically

On Fri, Jun 21, 2013 at 09:10:32AM +0000, Bob Ball wrote:
> It seems that numad is libvirt specific - is that the case?

No, it is a completely independant project

  https://git.fedorahosted.org/git/numad.git

It existed before libvirt started using it for automatic placement.

Daniel
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