Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262567AbUJ0R43 (ORCPT ); Wed, 27 Oct 2004 13:56:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262528AbUJ0Rww (ORCPT ); Wed, 27 Oct 2004 13:52:52 -0400 Received: from host213-160-108-25.dsl.vispa.com ([213.160.108.25]:29095 "EHLO cenedra.walrond.org") by vger.kernel.org with ESMTP id S262587AbUJ0Rse (ORCPT ); Wed, 27 Oct 2004 13:48:34 -0400 From: Andrew Walrond To: linux-os@analogic.com Subject: Re: solution Re: lost memory on a 4GB amd64 Date: Wed, 27 Oct 2004 18:47:41 +0100 User-Agent: KMail/1.7 Cc: Andreas Klein , Sergei Haller , Andi Kleen , "Rafael J. Wysocki" , linux-kernel@vger.kernel.org References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200410271847.41827.andrew@walrond.org> X-Spam-Score: 0.0 (/) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 787 Lines: 24 On Wednesday 27 Oct 2004 17:44, linux-os wrote: > > Could you please explain how memory is connected to only one > CPU? I don't think this is possible. The DIMMS are connected connected to cpu1. cpu2 accesses the ram with the Hypertransport bus. See page 9 of ftp://ftp.tyan.com/manuals/m_s2875_102.pdf > > Is this board for some new multiple-CPU specification? It can't > work for SMP (symmetrical multiprocessor specification) unless > both CPUs can access the same RAM. They can. Its a sort of castrated NUMA board :) Andrew Walrond - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/