From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (from majordomo@localhost) by pauillac.inria.fr (8.7.6/8.7.3) id XAA04193; Sat, 18 Jan 2003 23:50:01 +0100 (MET) X-Authentication-Warning: pauillac.inria.fr: majordomo set sender to owner-caml-list@pauillac.inria.fr using -f 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 XAA04621 for ; Sat, 18 Jan 2003 23:50:00 +0100 (MET) Received: from smtp-send.myrealbox.com (smtp-send.myrealbox.com [192.108.102.143]) by nez-perce.inria.fr (8.11.1/8.11.1) with ESMTP id h0IMnwv19262; Sat, 18 Jan 2003 23:49:58 +0100 (MET) Received: from tw304h3 oleg_inconnu@smtp-send.myrealbox.com [156.111.84.180] by smtp-send.myrealbox.com with NetMail SMTP Agent $Revision: 3.22 $ on Novell NetWare via secured & encrypted transport (TLS); Sat, 18 Jan 2003 15:49:59 -0700 Content-Type: text/plain; charset="iso-8859-1" From: Oleg To: Xavier Leroy , caml-list@inria.fr Subject: Re: Coyote Gulch test in Caml (was Re: [Caml-list] speed ) Date: Sat, 18 Jan 2003 17:49:47 -0500 User-Agent: KMail/1.4.3 References: <3E15B3B3.3040106@163.com> <20030103071042.T22850@speakeasy.org> <20030104193118.A26208@pauillac.inria.fr> In-Reply-To: <20030104193118.A26208@pauillac.inria.fr> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Message-Id: <200301181749.48295.oleg_inconnu@myrealbox.com> Sender: owner-caml-list@pauillac.inria.fr Precedence: bulk On Saturday 04 January 2003 01:31 pm, Xavier Leroy wrote: > Apparently, the ocamlopt-generated code > offers less instruction-level parallelism than the g++-generated code > for the float computations. Still, I haven't really understood where > the factor of 2 comes from. =20 It's been a couple of weeks. I'm wondering if you got any new insights in= to=20 this? Just as wild guess: the code contains calls to "sin" and "cos" on the sam= e=20 value. Perhaps GCC manages to optimize those into one call to "sincos" ------------------- To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ Beginner's list: http://groups.yahoo.com/group/ocaml_beginners