From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from concorde.inria.fr (concorde.inria.fr [192.93.2.39]) by yquem.inria.fr (Postfix) with ESMTP id 8D56ABC8B for ; Tue, 8 Feb 2005 11:34:33 +0100 (CET) Received: from pauillac.inria.fr (pauillac.inria.fr [128.93.11.35]) by concorde.inria.fr (8.13.0/8.13.0) with ESMTP id j18AYWwE022394 for ; Tue, 8 Feb 2005 11:34:33 +0100 Received: from nez-perce.inria.fr (nez-perce.inria.fr [192.93.2.78]) by pauillac.inria.fr (8.7.6/8.7.3) with ESMTP id LAA23653 for ; Tue, 8 Feb 2005 11:34:32 +0100 (MET) Received: from shiva.jussieu.fr (shiva.jussieu.fr [134.157.0.129]) by nez-perce.inria.fr (8.13.0/8.13.0) with ESMTP id j18AYWML028387 for ; Tue, 8 Feb 2005 11:34:32 +0100 Received: from localhost (akasha.ijm.jussieu.fr [134.157.173.57]) by shiva.jussieu.fr (8.12.11/jtpda-5.4) with ESMTP id j18AYVKa041419 ; Tue, 8 Feb 2005 11:34:32 +0100 (CET) X-Ids: 166 Date: Tue, 08 Feb 2005 11:34:30 +0100 (CET) Message-Id: <20050208.113430.112623673.andrieu@ijm.jussieu.fr> To: farr@MIT.EDU Cc: Christophe.Troestler@umh.ac.be, caml-list@inria.fr Subject: Re: [Caml-list] [Benchmark] NBody From: Olivier Andrieu In-Reply-To: <05666de9ff3face903514bf411230a8e@mit.edu> References: <68b7b7bf7d559600cf85b24d60f06cb2@mit.edu> <20050207.203659.94743120.Christophe.Troestler@umh.ac.be> <05666de9ff3face903514bf411230a8e@mit.edu> X-Mailer: Mew version 4.1 on Emacs 21.3 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-1.7.2 (shiva.jussieu.fr [134.157.0.166]); Tue, 08 Feb 2005 11:34:32 +0100 (CET) X-Miltered: at concorde with ID 420895B9.000 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)! X-Miltered: at nez-perce with ID 420895B8.000 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)! X-Miltered: at shiva.jussieu.fr with ID 420895B7.002 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)! X-Antivirus: scanned by sophie at shiva.jussieu.fr X-Spam: no; 0.00; caml-list:01 andrieu:01 andrieu:01 ijm:01 sqrt:01 compiler:01 breakdown:98 34%:98 jussieu:01 benchmark:02 hooks:03 profiling:05 probably:05 olivier:07 olivier:07 X-Spam-Checker-Version: SpamAssassin 3.0.2 (2004-11-16) on yquem.inria.fr X-Spam-Status: No, score=0.0 required=5.0 tests=none autolearn=disabled version=3.0.2 X-Spam-Level: "Will M. Farr" [Mon, 7 Feb 2005]: > When I ran it on my system using Shark (a Mac OS X profiling > application that doesn't require hooks in the app itself to get the > information), the breakdown of the significant values was > > 48.1% in advance > 34% in __sqrt (system function) ^^^^^^ in that case, the -ffast-math compiler switch will probably make a noticeable difference on x86 (but maybe that's cheating). -- Olivier