From: Peter Rival <frival@zk3.dec.com>
To: Jesse Barnes <jbarnes@sgi.com>
Cc: "Martin J. Bligh" <Martin.Bligh@us.ibm.com>,
linux-kernel@vger.kernel.org
Subject: Re: Whining about NUMA. :) [Was whining about 2.5...]
Date: Mon, 08 Oct 2001 15:37:27 -0400 [thread overview]
Message-ID: <3BC20077.6020706@zk3.dec.com> (raw)
In-Reply-To: <Pine.SGI.4.21.0110081207520.1003634-100000@spamtin.engr.sgi.com>
Just to put in my $0.02 on this... Compaq systems will span the range
on this. The current Wildfire^WGS Series systems have two levels -
either "local" or "remote", which is just under 3:1 latency vs. local.
This is all public knowledge, if you care to dig through all the docs. ;)
With the new EV7 systems coming out soon (next year?) every CPU has a
switch and memory controller built in, so as you add CPUs (up to 64) you
potentially add levels of latency. I can't say what they are, but the
numbers I've been given so far are _much_ better than that. Just
another data point. :)
- Pete
next prev parent reply other threads:[~2001-10-08 19:39 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-03 12:17 bug? in using generic read/write functions to read/write block devices in 2.4.11-pre2 Vladimir V. Saveliev
2001-10-03 13:16 ` [PATCH] " Alexander Viro
2001-10-03 16:18 ` Linus Torvalds
2001-10-03 21:43 ` Alexander Viro
2001-10-03 21:56 ` Christoph Hellwig
2001-10-03 22:51 ` Alexander Viro
2001-10-03 19:55 ` Whining about 2.5 (was Re: [PATCH] Re: bug? in using generic read/write functions to read/write block devices in 2.4.11-pre2) Rob Landley
2001-10-04 0:38 ` Rik van Riel
2001-10-03 22:27 ` Rob Landley
2001-10-04 20:53 ` Whining about 2.5 (was Re: [PATCH] Re: bug? in using generic read/write functions to read/write block devices in 2.4.11-pre2O Alan Cox
2001-10-04 23:59 ` Whining about NUMA. :) [Was whining about 2.5...] Rob Landley
2001-10-05 14:51 ` Alan Cox
2001-10-08 17:57 ` Martin J. Bligh
2001-10-08 18:10 ` Alan Cox
2001-10-08 18:20 ` Martin J. Bligh
2001-10-08 18:31 ` Alan Cox
2001-10-08 18:35 ` Jesse Barnes
2001-10-08 18:55 ` Martin J. Bligh
2001-10-08 17:48 ` Marcelo Tosatti
2001-10-08 19:20 ` Martin J. Bligh
2001-10-08 19:12 ` Jesse Barnes
2001-10-08 19:37 ` Peter Rival [this message]
2001-10-04 23:39 ` NUMA & classzones (was Whining about 2.5) Martin J. Bligh
2001-10-04 23:55 ` Rob Landley
2001-10-05 17:29 ` Martin J. Bligh
2001-10-06 1:44 ` Jesse Barnes
2001-10-04 21:02 ` Whining about 2.5 (was Re: [PATCH] Re: bug? in using generic read/write functions to read/write block devices in 2.4.11-pre2) Alan Cox
2001-10-03 21:09 ` Buffer cache confusion? Re: [reiserfs-list] bug? in using generic read/write functions to read/write block devices in 2.4.11-pre2 Eric Whiting
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