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Re: Somebody having access to a Windows machine with > 64 CPUs?


On 08/10/2015 12:05 PM, Achim Gratz wrote:
Corinna Vinschen writes:
I was referring to Windows 7 because that's the first OS (including
it's 2008R2 server version) which supports more than 64 CPUs and the
OS calls required to use and fetch info on them,
GetLogicalProcessorInformationEx.

I think the only practical use of this possibility might have been in
the HPC space.  I don't know anybody running such a system, though.

In-memory databases also benefit from really large systems. Lots of RAM requires lots of sockets, which bring along lots of cores. Eg. http://www.sgi.com/company_info/newsroom/press_releases/2015/july/sap_hana.html

I believe KVM will let you define a VM with > 64 CPUs, and recent versions provide some control over the NUMA layout of the virtual sockets/cores/threads. Maybe that will give you what you're looking for, Corinna.
--

						Brian J. Johnson

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