[Help-gsl] GSL Error code in multimin optimization

[Sushmita Roy]

Hi,
I am using the GSL multimin package to find the minima of
a high (~1000) dimensional function. I am using the 
"gsl_multimin_fdfminimizer_vector_bfgs2"
optimizer and I am following the example in the GSL multimin manual. 
However, every time I
execute an iteration using "gsl_multimin_fdfminimizer_iterate" I always 
get the error code GSL_ENOPROG,
which stands  for "iteration is not making progress..".

I know that there are several calls to my likelihood and its derivative 
functions, so the optimizer
does search for some time. But I am just concerned about the severity of 
this error code, and
whether it indicates that my results are wrong. I have checked the 
likelihood and derivative
functions and I am quite certain that I have them correctly.

I would appreciate any insight into why I am getting this error and how 
bad it is.
Thanks,
Sushmita