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From: Andi Kleen <ak@muc.de>
To: davids@webmaster.com
Cc: "linux-kernel mailing list" <linux-kernel@vger.kernel.org>,
	<jbarnes@engr.sgi.com>
Subject: Re: How can I optimize a process on a NUMA architecture(x86-64 specifically)?
Date: Sun, 23 May 2004 13:57:45 +0200	[thread overview]
Message-ID: <m3d64vtkxy.fsf@averell.firstfloor.org> (raw)
In-Reply-To: <1YRnC-3vk-5@gated-at.bofh.it> (David Schwartz's message of "Sun, 23 May 2004 05:00:12 +0200")

"David Schwartz" <davids@webmaster.com> writes:

> 	I don't think we've reached the point yet where treating x86-64 systems as
> NUMA machines makes very much sense.

Benchmarks disagree with you on that. In most cases local memory
policy seems to work better than BIOS interleaving. That's because
memory latency is usually more important than memory bandwidth.

-Andi


  parent reply	other threads:[~2004-05-23 11:57 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1Y6yr-eM-11@gated-at.bofh.it>
     [not found] ` <1YbRm-4iF-11@gated-at.bofh.it>
     [not found]   ` <1Yma3-4cF-3@gated-at.bofh.it>
     [not found]     ` <1YmjP-4jX-37@gated-at.bofh.it>
2004-05-21 19:17       ` How can I optimize a process on a NUMA architecture(x86-64 specifically)? Andi Kleen
     [not found]       ` <1YmMN-4Kh-17@gated-at.bofh.it>
     [not found]         ` <1Yn67-50q-7@gated-at.bofh.it>
2004-05-21 19:19           ` Andi Kleen
2004-05-21 20:32             ` Martin J. Bligh
2004-05-21 23:42               ` Brett E.
2004-05-22  6:13                 ` Martin J. Bligh
2004-05-22  7:41                   ` Andi Kleen
2004-05-23  0:28                 ` Bryan O'Sullivan
2004-05-23 14:28                   ` Andi Kleen
2004-05-24 22:00                     ` Andrew Theurer
2004-05-25  0:27                       ` Scott Robert Ladd
2004-05-25  1:09                       ` Brett E.
     [not found]     ` <1YRnC-3vk-5@gated-at.bofh.it>
2004-05-23 11:57       ` Andi Kleen [this message]
2004-05-21  0:51 Brett E.
2004-05-21  1:29 ` Jesse Barnes
2004-05-21  6:37 ` Martin J. Bligh
2004-05-21 17:27   ` Brett E.
2004-05-21 17:46     ` Martin J. Bligh
2004-05-21 18:14       ` Brett E.
2004-05-21 18:30         ` Martin J. Bligh
2004-05-21 18:58         ` Jesse Barnes
2004-05-21 19:08           ` Martin J. Bligh
2004-05-23  2:49     ` David Schwartz

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