[Coin-ipopt] Bug report on GAMS-IPOPT

[Andreas Waechter]

Hi Fengqi,

>From the output it seems that you are using Bonmin with the outer 
approximation option for a nonconvex problem?  As the message says: This 
is very experimental and has a good chance of not working.

If you have questions to Bonmin, please send a message to the Bonmin 
mailing list.

As for the error message that you see, it means that the linear solver in 
Ipopt ran out of memory.

Andreas

On Fri, 16 Nov 2007, Fengqi You wrote:

> When I use ipopt for small scale problem, it works well, though very slow. 
> But When I try it on a large scale problem in GAMS, it shows the following:
>
>
> IpOp3014W OA on non-convex constraint is very experimental, don't know how to 
> remove
> IpOp3014W OA on non-convex constraint is very experimental, don't know how to 
> remove
> MUMPS returned INFO(1) =-13 MUMPS failure.
> Exception of type: FATAL_ERROR_IN_LINEAR_SOLVER in file 
> "../../../../GAMSlinks-trunk/Ipopt/src/Algorithm/IpStdAugSystemSolver.cpp" at 
> line 219:
> Exception message: A fatal error occured in the linear solver.
> Ipopt has failed to solve a problem.
> --- Restarting execution
> --- outer_app.gms(90) 0 Mb
> --- Reading solution for model p2
> *** Status: Normal completion
> --- Job outer_app.gms Stop 11/16/07 12:24:42 elapsed 0:03:53.078
>
>
> -- 
>
> ______________________________
> Fengqi(Philip) You
> Dept. of Chemical Engineering
> Carnegie Mellon University
> Pittsburgh, PA 15213
> Tel: (412)216-2644
> http://andrew.cmu.edu/~fyou
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