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 JAA05258; Fri, 9 Nov 2001 09:39:58 +0100 (MET) X-Authentication-Warning: pauillac.inria.fr: majordomo set sender to owner-caml-list@pauillac.inria.fr using -f Received: (from weis@localhost) by pauillac.inria.fr (8.7.6/8.7.3) id JAA05230 for caml-list@pauillac.inria.fr; Fri, 9 Nov 2001 09:39:58 +0100 (MET) 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 AAA30532 for ; Fri, 9 Nov 2001 00:23:20 +0100 (MET) Received: from tcsnpop1.tcsn.uswest.net (tcsnpop1.tcsn.uswest.net [207.108.112.1]) by nez-perce.inria.fr (8.11.1/8.10.0) with SMTP id fA8NNJv23223 for ; Fri, 9 Nov 2001 00:23:19 +0100 (MET) Received: (qmail 35709 invoked by uid 50); 8 Nov 2001 23:23:18 -0000 Delivered-To: fixup-caml-list@inria.fr@fixme Received: (qmail 35671 invoked by uid 0); 8 Nov 2001 23:23:17 -0000 Received: from 216-161-146-96.customers.uswest.net (HELO dylan) (216.161.146.96) by tcsnpop1.tcsn.uswest.net with SMTP; 8 Nov 2001 23:23:17 -0000 Message-ID: <01c601c168ac$618f00f0$210148bf@dylan> From: "David McClain" To: "David Gurr" , References: <200111082306.PAA27217@mrs.mrs.med.ge.com> Subject: Re: FFTW, Re: [Caml-list] Array Optimizations Date: Thu, 8 Nov 2001 16:23:31 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2919.6600 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6600 Sender: owner-caml-list@pauillac.inria.fr Precedence: bulk It would be interesting to compare FFTW's performance with the library that I use for paralellized 2-D and 1-D FFT's written by Intel for the Pentium architecture. I just ran a test of this based on comparisons from the Clean list where they showed implementations ranging from 2 sec to 7 sec on a Sun 750 MHz (64 bit?). I ran my 1024 x 1024 2-D FFT on a Pentium II 350 MHz single CPU under Win/NT 4.0 (SP6) and got times around 1.17 sec. (estimates for the Sun workstation would be approx 4x speedup). - DM ----- Original Message ----- From: "David Gurr" To: ; Sent: Thursday, November 08, 2001 4:06 PM Subject: FFTW, Re: [Caml-list] Array Optimizations > The core of FFTW is a compiler written in Ocaml that generates > C code. It could be retargeted to gen Ocaml or Ocaml's intermediate > language Cmm. -D > ------------------- > Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ > 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/ To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr