From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754599AbYGVOVy (ORCPT ); Tue, 22 Jul 2008 10:21:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750975AbYGVOVq (ORCPT ); Tue, 22 Jul 2008 10:21:46 -0400 Received: from lucidpixels.com ([75.144.35.66]:40562 "EHLO lucidpixels.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750798AbYGVOVp (ORCPT ); Tue, 22 Jul 2008 10:21:45 -0400 Date: Tue, 22 Jul 2008 10:21:44 -0400 (EDT) From: Justin Piszcz To: linux-kernel@vger.kernel.org cc: Alan Piszcz Subject: 128 GiB memory question-- kernel only sees 64GiB? Message-ID: User-Agent: Alpine 1.10 (DEB 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, To be able to utilize 128 GiB of memory on a host, does one need to enable NUMA support? Currently only 64 GiB is showing up. As far as machine name/motherboard type, I do not have this information currently but I am told there are one or two of these boxes are running CentOS 5.x and/or RHEL5/AS. Is there something special you need to do to utilize all 128 GiB of memory? Thanks, Justin.