From: Andi Kleen <ak@muc.de>
To: Raphael Jacquot <raphael.jacquot@imag.fr>
Cc: Kernel Mailing List <linux-kernel@vger.kernel.org>,
"Sergey S. Kostyliov" <rathamahata@ehouse.ru>
Subject: Re: NUMA or not on dual Opteron
Date: Thu, 13 Jan 2005 20:40:46 +0100 [thread overview]
Message-ID: <m1oeft2k3l.fsf@muc.de> (raw)
In-Reply-To: <41E6472B.5020701@imag.fr> (Raphael Jacquot's message of "Thu, 13 Jan 2005 11:02:19 +0100")
Raphael Jacquot <raphael.jacquot@imag.fr> writes:
>
> Numa needs to be enabled on bi-opteron systems because each processor
> controls part of the memory. unlike the intel memory architecture,
> where processors share the same bus to access memory.
> Numa in opteron systems is thus required to allow sharing of memory .
[just for the record to avoid wrong information in the archives]
No, that's wrong. Opteron is CC (cache coherent)/NUMA, like most
modern NUMA systems. CC/NUMA tends to be fully transparent, this
means the system can be run like a SMP. Just it's faster to be
NUMA aware.
-Andi
next prev parent reply other threads:[~2005-01-13 19:46 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-12 5:09 Linux 2.6.11-rc1 Linus Torvalds
2005-01-12 7:07 ` Keith Owens
2005-01-12 7:32 ` Markus Trippelsdorf
2005-01-13 22:37 ` Linux 2.6.11-rc1 (ACPI related problems) Hanspeter Kunz
2005-01-12 8:24 ` Linux 2.6.11-rc1 Brice Goglin
2005-01-12 9:20 ` Tino Keitel
2005-01-12 9:38 ` Brice Goglin
2005-01-12 14:13 ` Dmitry Torokhov
2005-01-12 14:35 ` Brice Goglin
2005-01-12 15:50 ` Linus Torvalds
2005-01-12 19:13 ` Vojtech Pavlik
2005-01-12 15:24 ` Sergey S. Kostyliov
2005-01-12 15:32 ` Linus Torvalds
2005-01-12 15:44 ` Gene Heskett
2005-01-12 16:03 ` Sergey S. Kostyliov
2005-01-13 9:45 ` NUMA or not on dual Opteron (was: Re: Linux 2.6.11-rc1) Sander
2005-01-13 10:02 ` NUMA or not on dual Opteron Raphael Jacquot
2005-01-13 17:07 ` Justin M. Forbes
2005-01-13 19:43 ` Andi Kleen
2005-01-13 19:40 ` Andi Kleen [this message]
2005-01-13 15:36 ` NUMA or not on dual Opteron (was: Re: Linux 2.6.11-rc1) Alan Cox
2005-01-13 19:38 ` NUMA or not on dual Opteron Andi Kleen
2005-01-15 23:42 ` Sander
2005-01-13 21:24 ` Bernd Eckenfels
2005-01-14 8:04 ` David Schwartz
2005-01-14 8:10 ` Arjan van de Ven
2005-01-14 8:48 ` Andi Kleen
2005-01-12 19:06 ` Linux 2.6.11-rc1 -- usb_storage and Genesys Jan De Luyck
2005-01-13 5:42 ` [PATCH] contort getdents64 to pacify gcc-2.96 Adam Kropelin
2005-01-13 3:51 ` Linus Torvalds
2005-01-13 23:15 ` Linux 2.6.11-rc1 (compile stats) John Cherry
2005-01-16 9:22 ` Cross-compilation broken (was: Re: Linux 2.6.11-rc1) Geert Uytterhoeven
2005-01-16 16:09 ` Sam Ravnborg
2005-01-17 9:00 ` Geert Uytterhoeven
2005-01-19 21:07 ` Linux 2.6.11-rc1 Daniel Gryniewicz
2005-01-20 4:16 ` Dmitry Torokhov
2005-01-20 4:49 ` Daniel Gryniewicz
2005-01-20 7:17 ` Peter Osterlund
2005-01-20 15:01 ` Romano Giannetti
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