Re: [Help-gsl] Stiff ODE's

[Brian Gough]

At Mon, 2 Jul 2007 16:51:27 +0300 (EEST),
Periklis Rammos wrote:
> 1) Is rk8pd an implicit or an explicit method?

Explicit.  If a method is implicit, it is described as such in the
reference manual (section 25.2).  If not, it is explicit by default.

> 2) If I need to switch to another method what is your suggestion?
> Some colleagues have used Rosenbrock-Runge-Kutta and suggest it.
> GSL offers a number of implicit methods, as described in the manual.
> Is Rosenbrock-Runge-Kutta also included?

The best general implicit method is bsimp (Bulirsch-Stoer).
I would recommend using another method for comparision (e.g. Gear).

-- 
best regards,

Brian Gough

Network Theory Ltd,
Publishing the GSL Manual - http://www.network-theory.co.uk/gsl/manual/