Re: Will over-allocation of vCPUs be counterproductive to VM Win7 Ultimate?

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On Wed, Oct 29, 2014 at 01:04:25PM -0400, Cole Robinson wrote:
On 10/29/2014 12:47 PM, Allen Qiu wrote:
Hi all,
Will over-allocation of vCPUs be counterproductive to VM Win7 Ultimate? I allocated 32 (out of 64 physical cores in 8 NUMA cells, and 128G out of 2T physical RAM) to the VM. But the boot process was extremly slow, actually the desktop screen never showed up then the VM just reboot automatically. So is there anything I can do to solve this problem or the truth is Win7 by design just cannot handle that mount of CPUs even with Win7 Ultimate?
Regards,
Allen

https://en.wikipedia.org/wiki/Windows_7#Processor_limits

This question would probably be better suited for a microsoft specific forum.
But I think if you want to pass that many CPUs to windows, you need to use a
version of windows server, not plain windows 7


You can also try setting up the guest with 2 physical vCPUs and
putting the rest as cores and threads.  Also check that HW virt works
for you ;)

Martin

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