From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 5151 invoked by alias); 22 Sep 2008 18:32:15 -0000 Received: (qmail 5142 invoked by uid 22791); 22 Sep 2008 18:32:15 -0000 X-Spam-Check-By: sourceware.org Received: from smtp6.pp.htv.fi (HELO smtp6.pp.htv.fi) (213.243.153.40) by sourceware.org (qpsmtpd/0.31) with ESMTP; Mon, 22 Sep 2008 18:31:21 +0000 Received: from [10.0.0.133] (cs78194074.pp.htv.fi [62.78.194.74]) by smtp6.pp.htv.fi (Postfix) with ESMTP id 813095BC07C; Mon, 22 Sep 2008 21:31:18 +0300 (EEST) Message-ID: <48D7E476.2010000@iki.fi> Date: Mon, 22 Sep 2008 18:32:00 -0000 From: Tuomo Keskitalo User-Agent: Icedove 1.5.0.14eol (X11/20080724) MIME-Version: 1.0 To: Patrick Alken CC: gsl-discuss@sourceware.org Subject: simplicity vs. efficiency of algorithms in GSL References: <200809221621.54890.emanuele.passera@treuropa.com> <20080922162507.GA29877@hippogriff.homeunix.org> In-Reply-To: <20080922162507.GA29877@hippogriff.homeunix.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Mailing-List: contact gsl-discuss-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gsl-discuss-owner@sourceware.org X-SW-Source: 2008-q3/txt/msg00026.txt.bz2 On 09/22/2008 07:25 PM, Patrick Alken wrote: > There are much faster (and far more sophisticated) eigenvalue > algorithms that are not really suited for GSL due to their > complexity to code. LAPACK contains these types of algorithms > and it is encouraged to use that library if one needs the > fastest available algorithms. About this point: I have been wondering where the balance of GSL should be on simplicity vs. efficiency of the code. Of course, even a simple algorithm is better than none, but I think it would be good to offer efficient routines in GSL. If somebody publishes a well written, efficient eigenvalue algorithm, would it get included in GSL? Or would it be better off as an extension library? -- Tuomo.Keskitalo@iki.fi http://iki.fi/tuomo.keskitalo