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Re: Questions on bsimp


Di Xiao writes:
 >  However, I still have a question.  We use adaptive stepzie control
 > because we want to deduce the computational effort.  The algorithm
 > should be smart to know at which region there is the smooth
 > uninteresting curve, while in some region many small steps are
 > needed.  My question is why bsimp chose some unreasonably big steps
 > in my code.  It can jump from one period to another period without
 > showing the details of each one.  If you run the code, you will
 > find from the results givin by bsimp, it is hard to tell what
 > function it likes. I tried different gsl_odeiv_control, but none of
 > them gave me good results.  I guess the reason is when there are
 > oscillations, bsimp is not a good one.  Can anybody explain it?

Bsimp can take very large steps and still be highly accurate.  See the
reference to the paper in the manual for details.


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