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 mail1-relais-roc.national.inria.fr (mail1-relais-roc.national.inria.fr [192.134.164.82]) by yquem.inria.fr (Postfix) with ESMTP id 71903BC37 for ; Sun, 8 Nov 2009 19:11:40 +0100 (CET) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: ArsAAAeZ9krUnwdki2dsb2JhbACCHJlYAQEBCgsKBxEGvGiEPgQ X-IronPort-AV: E=Sophos;i="4.44,704,1249250400"; d="scan'208";a="39739936" Received: from relay.pcl-ipout02.plus.net ([212.159.7.100]) by mail1-smtp-roc.national.inria.fr with ESMTP/TLS/RC4-SHA; 08 Nov 2009 19:11:40 +0100 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AmcFADeZ9kpUXebz/2dsb2JhbACCHNcAhD4E Received: from relay02.plus.net ([84.93.230.243]) by relay.pcl-ipout02.plus.net with ESMTP; 08 Nov 2009 18:11:27 +0000 Received: from [87.115.63.247] (helo=leper.local) by relay02.plus.net with esmtp (Exim) id 1N7CEY-0000Ff-PR for caml-list@yquem.inria.fr; Sun, 08 Nov 2009 18:11:26 +0000 From: Jon Harrop Organization: Flying Frog Consultancy Ltd. To: caml-list@yquem.inria.fr Subject: Re: [Caml-list] OC4MC : OCaml for Multicore architectures Date: Sun, 8 Nov 2009 18:12:27 +0000 User-Agent: KMail/1.9.9 References: <4d1b2df20909240738g1ba80204ra8cd138ef5c58956@mail.gmail.com> <200909250028.57186.jon@ffconsultancy.com> In-Reply-To: <200909250028.57186.jon@ffconsultancy.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200911081812.27977.jon@ffconsultancy.com> X-Plusnet-Relay: c142fec2c1d16c4a1b4360af196fc165 X-Spam: no; 0.00; ocaml:01 2009:98 frog:98 wrote:01 partial:01 caml-list:01 data:02 slower:02 slower:02 benchmark:04 compiled:04 simpler:05 release:09 complexity:09 example:10 On Friday 25 September 2009 00:28:57 Jon Harrop wrote: > Just to quantify this with a data point: the fastest (serial) version of my > ray tracer benchmark is 10x slower with the new GC. However, this is > anomalous with respect to complexity and the relative performance is much > better for simpler renderings. For example, the new GC is only 1.7x slower > with n=6 instead of n=9. The new SmartPumpkin release of OC4MC does a lot better. Specifically, the version compiled with partial collections is now only 3.9x slower on a serial ray tracer with n=9 (compared to 10x slower before). I'll try it in more detail... -- Dr Jon Harrop, Flying Frog Consultancy Ltd. http://www.ffconsultancy.com/?e