From: Tuomo Keskitalo <Tuomo.Keskitalo@iki.fi>
To: gsl-discuss@sourceware.org
Subject: GSL ode-initval development
Date: Sun, 17 Aug 2008 08:39:00 -0000 [thread overview]
Message-ID: <48A7E377.3020607@iki.fi> (raw)
Hello all,
I've been thinking about adding some implicit one step solvers for GSL
ode-initval. However, I think the current ode-initval framework is not
too easy to use for implicit solvers.
Implicit solvers result in a group of algebraic non-linear equations,
for which there exists several solution strategies. The choice of the
efficient strategy depends on the problem. For example, some modified
Newton iteration methods are suitable for stiff systems, while
functional iteration works for non-stiff systems. I would like to give
the user the freedom to choose the non-linear eq solver separately from
the stepping method. Does anyone see a way to do this with current
framework?
I am currently considering to add a new framework part for specifying
the non-linear equation solver. However, this would break the current
framework. I wonder if I should write a separate "ode-initval2" library
because of this. Any comments?
--
Tuomo.Keskitalo@iki.fi
http://iki.fi/tuomo.keskitalo
next reply other threads:[~2008-08-17 8:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-17 8:39 Tuomo Keskitalo [this message]
2008-08-18 18:11 ` Brian Gough
2008-08-31 7:26 ` Tuomo Keskitalo
2008-09-02 19:08 ` ode-initval stepper logic Tuomo Keskitalo
2008-09-03 10:58 ` GSL ode-initval development Brian Gough
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