multidi

Hi,

I am using the multidimensionial minimization routines, and I get very
often an error code from gsl_multimin_fminimizer_iterate, namely
"iteration is not making progress towards solution".

I get this error with all the gradient-based algorithms; I should say that
the function that I minimize is computed not very accurately, in the sense
that the gradients may not correspond too accurately to the function
itself.

Why and when is the above mentioned error code issued?

I am using gsl-1.9 compiled with gcc-4.1 on a linux machine.

Thanks!

Alberto.

======================================================================
Dr. Alberto Castro

Institut fur Theoretisch Physik, Freie Universitat Berlin.
Arnimallee, 14, Berlin 14195 (Deutschland)

Tel:   +49 30 83853028
Fax:   +49 30 83855258
skype: alberto_c_barrigon
email: alberto@xxxxxxxxxxxxxxxxxxx
======================================================================