From owner-freebsd-amd64@FreeBSD.ORG  Mon Mar 13 12:00:30 2006
Return-Path: <owner-freebsd-amd64@FreeBSD.ORG>
X-Original-To: freebsd-amd64@freebsd.org
Delivered-To: freebsd-amd64@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id AE91216A424
	for <freebsd-amd64@freebsd.org>; Mon, 13 Mar 2006 12:00:29 +0000 (UTC)
	(envelope-from amon@sockar.homeip.net)
Received: from sockar.homeip.net (tourist.net8.nerim.net [213.41.176.3])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 5DEBE43D45
	for <freebsd-amd64@freebsd.org>; Mon, 13 Mar 2006 12:00:28 +0000 (GMT)
	(envelope-from amon@sockar.homeip.net)
Received: from sockar.homeip.net (localhost [127.0.0.1])
	by sockar.homeip.net (8.13.3/8.13.3) with ESMTP id k2DBq50E027632;
	Mon, 13 Mar 2006 12:52:05 +0100 (CET)
	(envelope-from amon@sockar.homeip.net)
Received: (from amon@localhost)
	by sockar.homeip.net (8.13.3/8.13.3/Submit) id k2DBq5xV027631;
	Mon, 13 Mar 2006 12:52:05 +0100 (CET) (envelope-from amon)
Date: Mon, 13 Mar 2006 12:52:05 +0100
From: Herve Boulouis <amon@sockar.homeip.net>
To: JoaoBR <joao@matik.com.br>
Message-ID: <20060313115205.GA17399@ra.aabs>
References: <60F1B0FC76F1504A91839905DA7EBDB603903C@ssuzexmb3.amd.com>
	<2fd864e0603130256l52f5b0aoa5e2a4c720aa3e10@mail.gmail.com>
	<2fd864e0603130300m12a02932tb82c3c5fa4ac1973@mail.gmail.com>
	<200603130823.35433.joao@matik.com.br>
Mime-Version: 1.0
Content-Type: text/plain; charset=unknown-8bit
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <200603130823.35433.joao@matik.com.br>
User-Agent: Mutt/1.4.2.1i
Cc: freebsd-amd64@freebsd.org
Subject: Re: Fwd: NUMA and Dual-Core Support
X-BeenThere: freebsd-amd64@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Porting FreeBSD to the AMD64 platform <freebsd-amd64.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-amd64>,
	<mailto:freebsd-amd64-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-amd64>
List-Post: <mailto:freebsd-amd64@freebsd.org>
List-Help: <mailto:freebsd-amd64-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-amd64>,
	<mailto:freebsd-amd64-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 13 Mar 2006 12:00:30 -0000

Le 13/03/2006  08:23, JoaoBR a écrit:
> 
> Is the memory access with dual-core (not HT) the the same as with 
> dual-processores? Would NUMA have any impact on dual-cores?

Since the memory controller is shared between the 2 cores on dual core
opterons, I doubt you'll see any benefits on memory accesses with a NUMA
aware scheduler.

-- 
Herve Boulouis