Hi list members,

I have just started with nlopt calling it from Fortran.

However, for my data set I receive error code -1 when using global optimizer 
AUGLAG with local optimizer LD_SLSQP, LD_TNEWTON_PRECOND_RESTART,  LD_LBFGS, 
or LD_TNEWTON, but not when using local optimizer LD_MMA and LD_CCSA.

More specifically, I call the global solver from a loop about 15,000 times for 
processing a data set sequentially. The error occurs usually after a few 
hundred calls.

Since this error is marked as "generic" without any further explanation can 
anyone give a more detailed explanation about its possible causes.

Thanks a lot

Cheers

Karl

NB:
-Operation system: ubuntu 15.10.
-linux kernel 4.2.0-16
-nlopt library compiled from source. 
-fortran compiler: ifort 15
-gcc version 5.2.1

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