Iterative solver (again) [Was: Re: [ODE] Russ' plans for ODE?]

[Roel van Dijk]

On Thursday 22 April 2004 18:03, Alen Ladavac wrote:
> For a start, I was wondering... is there any particular reason why does the
> StepFast solver subdivide a step into smaller substeps of shorter length?
> Shouldn't it instead reiterate over the same large step, improving the
> solution each time?
Well, I know very little about solvers but I believe the StepFast solver makes 
some assumptions about the world which are only true (or close the true) when 
the steps are very small. It is so fast because it uses those assumptions to 
optimize the stepping.

I'm not sure what you mean with iterating over a large step.