From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: [Xen-devel] Re: Using Xen Virtualization Environment for Development and Testing of Supercomputing and High Performance Computing (HPC) Cluster MPICH2 MPI-2 Applications Date: Fri, 30 Oct 2009 09:24:33 -0700 Message-ID: <4AEB1341.3030708@goop.org> References: <20091030094943.GL1434@reaktio.net> <4AEB04A3.5020100@goop.org> <20091030160408.GP1434@reaktio.net> <4AEB1006.2030009@goop.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-users-bounces@lists.xensource.com Errors-To: xen-users-bounces@lists.xensource.com To: "Mr. Teo En Ming (Zhang Enming)" Cc: xen-devel@lists.xensource.com, xen-users@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On 10/30/09 09:14, Mr. Teo En Ming (Zhang Enming) wrote: > Strange. I took nearly 1 hour to compile on my Intel Pentium Dual Core > E6300 2.8 GHz processor on Intel Desktop Board DQ45CB with 8 GB > DDR2-800 memory. It depends a lot on how much kernel you have configured; I can believe a full distro-like config with everything built with modules would take a lot longer. Are you using make's -j option to use multiple cores? I tend to use "make -j4" to get good processor use on a dual-core system (rough rule of thumb, -jX where X = 2*ncpu). J