From owner-freebsd-amd64@FreeBSD.ORG Fri Jan 27 18:39:58 2006 Return-Path: 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 E1FAC16A420 for ; Fri, 27 Jan 2006 18:39:58 +0000 (GMT) (envelope-from freebsd@deadcafe.de) Received: from deadcafe.de (deadcafe.de [81.169.162.144]) by mx1.FreeBSD.org (Postfix) with ESMTP id 134C543D53 for ; Fri, 27 Jan 2006 18:39:57 +0000 (GMT) (envelope-from freebsd@deadcafe.de) Received: from dialin.t-online.de (p54A5D028.dip.t-dialin.net [84.165.208.40]) by deadcafe.de (8.13.4+Sun/8.13.4/Rock) with ESMTP id k0RIdsB6016472 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 27 Jan 2006 19:39:55 +0100 (CET) Received: from [172.23.7.254] (doom.rock.net [172.23.7.254]) by dialin.t-online.de (8.13.4+Sun/8.13.4/Rock) with ESMTP id k0RIdn3G000388; Fri, 27 Jan 2006 19:39:49 +0100 (CET) Message-ID: <43DA6906.9030508@deadcafe.de> Date: Fri, 27 Jan 2006 19:40:06 +0100 From: Daniel Rock User-Agent: Thunderbird 1.5 (Windows/20051201) MIME-Version: 1.0 To: kono@kth.se References: <200601270957.44032.kono@kth.se> In-Reply-To: <200601270957.44032.kono@kth.se> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=0.1 required=5.5 tests=FORGED_RCVD_HELO autolearn=disabled version=3.0.4 X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on deadcafe.de Cc: mumag@nist.gov, freebsd-amd64@freebsd.org Subject: Re: dual vs single core opteron 100's X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Jan 2006 18:39:59 -0000 Alexander Konovalenko schrieb: > I have upgraded my AMD64 Athlon 3000+ to dual core X2 4400+. Now I can run > two oommf tasks at the same time, and performance (I measure total execution > time of the task) is around 186% comparing with 100% when only one task is > running. This 7% degrade in performance per task is probably due to > concurrent data transferring CPU<->RAM. I am very satisfied with X2 but just > wonder if dual core Opteron gives better performance? Does anybody run OOMMF > on Opteron? Besides the different CPUID, Athlon64 X2 (with 2x1MB Cache) and Dual-Core Opteron 1xx are exactly the same. Daniel