Mailing-List: contact cygwin-help@sourceware.cygnus.com; run by ezmlm Sender: cygwin-owner@sourceware.cygnus.com Delivered-To: mailing list cygwin@sourceware.cygnus.com From: "Lars Gregersen" Organization: Institut for Kemiteknik To: Mumit Khan , "Cygwin Mailing List" , reza@psych.utoronto.ca Date: Tue, 13 Jul 1999 10:14:07 -0100 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: Re: optimization Reply-to: lg@kt.dtu.dk CC: "Cygwin Mailing List" In-reply-to: <199907121917.OAA03546@venus.xraylith.wisc.edu> References: Your message of "Mon, 12 Jul 1999 13:23:04 EDT." <000301becc8b$3366ad00$788a94d1@newton> X-mailer: Pegasus Mail for Windows (v3.01d) Message-ID: <11DB356CE6@popeye.kt.dtu.dk> > "Reza Habib" writes: [snip] > > is windows). I'm in the process of writing some statistical tools for > > image analysis. My data are in floating point and I will mainly be > > conducting matrix algebra type operations. I'm trying to pick the > > compiler which will produce the fastest, most efficient code. Thanks. > > For floating point intensive code, MSVC is hard to beat at this time. > However, for majority of the `real-life' numerical code, it doesn't matter > all that much as long as the compiler codegen performance is reasonably > close. I wonder if anybody has used to Intel Math Kernel Libraries with the egcs compiler? It consists of BLAS level 1 to 3 and some LAPACK functions, but egcs is not supported. I have seen a very big increase in computational performance using this library with the MSVC compiler, but we should be able to get the same performance jump when using egcs. No matter what compiler you use you should consider this library for matrix computations (provided you're planning to run the code on a Intel processor). Have anybody tested this? Regards Lars Gregersen --------------------------------------------------------------------- Lars Gregersen Telephone no.: +45 45 25 28 08 Technical University of Denmark Fax no. : +45 45 88 22 58 Department of Chemical Engineering E-mail : lg@kt.dtu.dk Bygning 229 DK-2800 Lyngby Denmark --------------------------------------------------------------------- Homepage: http://www.gbar.dtu.dk/~matlg/ -- Want to unsubscribe from this list? Send a message to cygwin-unsubscribe@sourceware.cygnus.com