[Qemu-devel] Boot guest OS on many nodes?

[Qemu-devel] Boot guest OS on many nodes?

[Steven.G]

Dear all,

I've a scene,
I have many host nodes with linux kernels, and I want to boot one guest
OS on all these nodes use QEMU/KVM. In order that I can use all the
physical CPUs and Mems distributed on these linux nodes, and the Guest
looks like a SMP or shared-memory system.
How can I use QEMU/KVM to achieve this?Any one helps me with some basic
ideas.

Best regards

Steven

[Qemu-devel] Re: Boot guest OS on many nodes?

[Brian Jackson]

On Sunday, June 2, 2013 9:37:55 PM CDT, Steven.G wrote:
> Dear all,
>
> I've a scene,
> I have many host nodes with linux kernels, and I want to boot one guest
> OS on all these nodes use QEMU/KVM. In order that I can use all the
> physical CPUs and Mems distributed on these linux nodes, and the Guest
> looks like a SMP or shared-memory system.
> How can I use QEMU/KVM to achieve this?Any one helps me with some basic
> ideas.


You can't. That's not the way KVM works. You probably want something more along the lines of SSI (single system image).


>
> Best regards
>
> Steven
>
>
>

Re: [Qemu-devel] Boot guest OS on many nodes?

[Steven.G]

Thanks very much,
> On Sunday, June 2, 2013 9:37:55 PM CDT, Steven.G wrote:
>> Dear all,
>>
>> I've a scene,
>> I have many host nodes with linux kernels, and I want to boot one guest
>> OS on all these nodes use QEMU/KVM. In order that I can use all the
>> physical CPUs and Mems distributed on these linux nodes, and the Guest
>> looks like a SMP or shared-memory system.
>> How can I use QEMU/KVM to achieve this?Any one helps me with some basic
>> ideas.
>
>
> You can't. That's not the way KVM works. You probably want something 
> more along the lines of SSI (single system image).
>


If I change the QEMU codes to adapt this using some mechanism like RPC 
to communicate within nodes, and register CPUs and Mems to the seabios 
when booting the guest, throw some qemu vcpu threads to remote nodes.

Do I have a chance?


>>
>> Best regards
>>
>> Steven
>>
>>
>>
>
>

[Qemu-devel] Re: Boot guest OS on many nodes?

[Brian Jackson]

On Monday, June 3, 2013 7:54:31 PM CDT, Steven.G wrote:
> Thanks very much,
>> On Sunday, June 2, 2013 9:37:55 PM CDT, Steven.G wrote: ...
>
>
> If I change the QEMU codes to adapt this using some mechanism 
> like RPC to communicate within nodes, and register CPUs and Mems 
> to the seabios when booting the guest, throw some qemu vcpu 
> threads to remote nodes.
>
> Do I have a chance?


You would be changing Qemu so deeply, it would hardly be Qemu any more (not to mention that accessing memory/cpu's over a network connection would be ridiculously slow).


>
>
>>> Best regards
>>> 
>>> Steven
>>> 
>>> 
>>>  ...
>> 
>> 
>
>
>