X-Recipient: archive-cygwin AT delorie DOT com
DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:date:from:to:subject:message-id:reply-to
	:references:mime-version:content-type:in-reply-to; q=dns; s=
	default; b=Z4RQt4cbkyrE+pFbsbtsiM+WQmEeB/jNxF3wjLxN1sAuqOR518sIQ
	mF5XEjtF/TSeuTqBwHXkRw+jGSfeQFLNzCWGVp5+DyUswRuDVT4SfCjXQxAD34Dg
	6p881p5FDrzAmVzeF/wEWUTfzDhpxgTzxyTweBXUqZy1TnbGG5orA8=
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:date:from:to:subject:message-id:reply-to
	:references:mime-version:content-type:in-reply-to; s=default;
	 bh=iwtG5ZF5tPxGa3RWRaLmRdnHh4g=; b=wB+XzRSEkOe/RSypCr7bL0LVfC2E
	UIzX8EOIQxSWElxFHB4uEWNokiKbJqLKDH4y7jvv1l8eNpELVpdMfms58HKuZMJT
	dRHDVzTWqmubsESduKQBMPQ6xx4t71MGuiDP4cb1NQx/UxgQc5/JehmxvZc9of9i
	nIDDGBYvsLHXxpY=
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id: <cygwin.cygwin.com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com
Authentication-Results: sourceware.org; auth=none
X-Virus-Found: No
X-Spam-SWARE-Status: No, score=-4.1 required=5.0 tests=AWL,BAYES_50,KAM_LAZY_DOMAIN_SECURITY autolearn=no version=3.3.2
X-HELO: calimero.vinschen.de
Date: Wed, 12 Aug 2015 17:20:03 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Somebody having access to a Windows machine with > 64 CPUs?
Message-ID: <20150812152003.GK13029@calimero.vinschen.de>
Reply-To: cygwin AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
References: <20150810160011 DOT GC13029 AT calimero DOT vinschen DOT de> <6E689F0D-F196-4D1B-B6FA-782A27AF936C AT etr-usa DOT com> <20150810165604 DOT GE13029 AT calimero DOT vinschen DOT de> <87lhdjrs54 DOT fsf AT Rainer DOT invalid> <55CA37A1 DOT 4030704 AT sgi DOT com>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha256;	protocol="application/pgp-signature"; boundary="STPqjqpCrtky8aYs"
Content-Disposition: inline
In-Reply-To: <55CA37A1.4030704@sgi.com>
User-Agent: Mutt/1.5.23 (2014-03-12)

--STPqjqpCrtky8aYs
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Aug 11 12:57, Brian J. Johnson wrote:
> 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.
>=20
> In-memory databases also benefit from really large systems.  Lots of RAM
> requires lots of sockets, which bring along lots of cores.  Eg. http://ww=
w.sgi.com/company_info/newsroom/press_releases/2015/july/sap_hana.html
>=20
> 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.

Nice idea and incidentally a collegue reminded me of this idea a couple
hours ago as well.  I tested this now locally and I got the results I'm
looking for (albeit they are a bit confusing).


Thanks,
Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

--STPqjqpCrtky8aYs
Content-Type: application/pgp-signature

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
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=YCgu
-----END PGP SIGNATURE-----

--STPqjqpCrtky8aYs--