From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Original-To: caml-list@yquem.inria.fr Delivered-To: caml-list@yquem.inria.fr Received: from mail4-relais-sop.national.inria.fr (mail4-relais-sop.national.inria.fr [192.134.164.105]) by yquem.inria.fr (Postfix) with ESMTP id D0A3CBBAF for ; Sat, 13 Mar 2010 16:10:40 +0100 (CET) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhkEAFo5m0tQRFuwWWdsb2JhbACacgsBFBcEOLhThHsE X-IronPort-AV: E=Sophos;i="4.49,632,1262559600"; d="scan'208";a="58796171" Received: from furbychan.cocan.org ([80.68.91.176]) by mail4-smtp-sop.national.inria.fr with ESMTP; 13 Mar 2010 16:10:40 +0100 Received: from rich by furbychan.cocan.org with local (Exim 4.63) (envelope-from ) id 1NqSz9-0005Ds-VR; Sat, 13 Mar 2010 15:10:39 +0000 Date: Sat, 13 Mar 2010 15:10:39 +0000 To: Hugo Ferreira Cc: caml-list@yquem.inria.fr Subject: Re: [Caml-list] Shared memory parallel application: kernel threads Message-ID: <20100313151039.GA16796@annexia.org> References: <4B9A2BCB.3040607@inescporto.pt> <20100313135623.GA17113@annexia.org> <4B9BA14F.2030805@inescporto.pt> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4B9BA14F.2030805@inescporto.pt> User-Agent: Mutt/1.5.13 (2006-08-11) From: Richard Jones X-Spam: no; 0.00; model:01 model:01 nodes:01 read-only:01 threads:01 wrote:01 caml-list:01 data:02 kernel:02 seems:03 experiments:03 mpi:04 problem:05 parallel:05 shared:06 On Sat, Mar 13, 2010 at 02:29:35PM +0000, Hugo Ferreira wrote: > I will be using a single 8-CPU machine for the experiments. > For the problem at hand shared the memory model seems to be > a better fit than messaging. I've not actually tried it, but I bet you can use a hybrid model -- Use MPI as an easy way to spread the jobs over the nodes and for coordinating the processes, then have each process open a shared Ancient file (backed by NFS) for the read-only data. Rich. -- Richard Jones Red Hat