Cores from Multiple Physical Hosts in VM

[Robert Gabriel <ep...@gmail.com>]

Hi,

Is it possible to do the below?

Thank you.


Answered by sgordon:

It is my understanding that this is not currently possible, there was some
discussion at the design summit (I think in the Libvirt driver roadmap
session) about making the scheduler NUMA aware which would allow such
configurations on hardware that supports NUMA but this is currently
unimplemented.

In reply to ephemeric's question: Cores from Multiple Physical Hosts in VM

Tags: vcpus, aggregates, hosts, multiple, physical.

Hi,

Pardon my ignorance as I have never looked at cloud computing.

Is it possible to create a VM and assign to it cores from multiple physical
hosts for high vcpu numbers?

We have the following problem: Splunk running 38 concurrent searches on a
blade that only has 16 cores.

By creating a VM and combining the cores from two blades, hence 32 vcpus in
total somehow?

I'm not sure if this is possible.

Thank you.

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Re: Cores from Multiple Physical Hosts in VM

[Sebastien Goasguen <ru...@gmail.com>]

On Nov 13, 2013, at 7:03 AM, Robert Gabriel <ep...@gmail.com> wrote:

> Hi,
> 
> Is it possible to do the below?
> 
> Thank you.
> 
> 
> Answered by sgordon:
> 
> It is my understanding that this is not currently possible, there was some
> discussion at the design summit (I think in the Libvirt driver roadmap
> session) about making the scheduler NUMA aware which would allow such
> configurations on hardware that supports NUMA but this is currently
> unimplemented.
> 
> In reply to ephemeric's question: Cores from Multiple Physical Hosts in VM
> 
> Tags: vcpus, aggregates, hosts, multiple, physical.
> 
> Hi,
> 
> Pardon my ignorance as I have never looked at cloud computing.
> 
> Is it possible to create a VM and assign to it cores from multiple physical
> hosts for high vcpu numbers?
> 
> We have the following problem: Splunk running 38 concurrent searches on a
> blade that only has 16 cores.
> 
> By creating a VM and combining the cores from two blades, hence 32 vcpus in
> total somehow?

As far as I know this is not possible. 

That said I would be very surprise if Splunk could not use multiple machines. So just run multiple instances (separate VMs) that point to the same data store.

> 
> I'm not sure if this is possible.
> 
> Thank you.
> 
> To change frequency, language and content of these alerts, please visit your
> user profile<https://ask.openstack.org/en/users/2044/ephemeric/subscriptions/>.
> 
> 
> If you believe that this message was sent in an error, please email about
> it the forum administrator at communitymngr@openstack.org.