From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 26496 invoked by alias); 24 Jan 2009 11:52:31 -0000 Received: (qmail 26484 invoked by uid 22791); 24 Jan 2009 11:52:31 -0000 X-SWARE-Spam-Status: No, hits=-0.6 required=5.0 tests=AWL,BAYES_50 X-Spam-Check-By: sourceware.org Received: from smtp5.welho.com (HELO smtp5.welho.com) (213.243.153.39) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Sat, 24 Jan 2009 11:52:24 +0000 Received: from [10.0.0.133] (cs27048245.pp.htv.fi [89.27.48.245]) by smtp5.welho.com (Postfix) with ESMTP id DB05C5BC039 for ; Sat, 24 Jan 2009 13:52:21 +0200 (EET) Message-ID: <497B00F6.2080400@iki.fi> Date: Sat, 24 Jan 2009 11:52:00 -0000 From: Tuomo Keskitalo User-Agent: Icedove 1.5.0.14eol (X11/20090105) MIME-Version: 1.0 To: GSL Discuss Mailing List Subject: Re: ode-initval implicit solvers and development References: <48E25CA9.6080306@iki.fi> <490DE4BD.7070907@iki.fi> In-Reply-To: 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: 2009-q1/txt/msg00002.txt.bz2 Hello, I've been working on an implementation of the Adams linear multistep methods with functional iteration for GSL ode-initval (msadams), and finally got a first beta for you to test and comment on. The source is available at the git repository mentioned below. Please note the comments on file ode-initval/ChangeLog-Keskitalo. The biggest change is an addition to the step and control object structures to allow passing error tolerance to steppers. I'm afraid a change like this is really needed. I'm planning to implement also the backward differentiation formula (BDF) methods with Newton iteration for stiff problems. Kind regards, Tuomo On 11/03/2008 08:08 PM, Brian Gough wrote: > At Sun, 02 Nov 2008 19:34:53 +0200, > Tuomo Keskitalo wrote: >> while waiting for a reference book on multistep methods to arrive, I've >> made some more modifications to current ode-initval, which I hope are >> now close to being ready to be included into GSL. The .git directory >> that should include the changes can be found at >> >> http://iki.fi/tuomo.keskitalo/gsl/ode-initval-additions/.git > > Thanks, I've retrieved it successfully (much easier than patches by email). > > For those new to git the relevant commands to download it are > > git remote add tuomo http://iki.fi/tuomo.keskitalo/gsl/ode-initval-additions/.git > git fetch tuomo > > The branch name is then tuomo/master. -- Tuomo.Keskitalo@iki.fi http://iki.fi/tuomo.keskitalo