[Couenne] Couenne with Cplex, now

[Pietro Belotti]

Dear Nathalie,

I'm glad it is working. It is actually better to work with the stable 
version, given that the trunk has a lot of experimental code and it may 
give inconsistent results.

Regards,
Pietro

--
Pietro Belotti
Dept. of Mathematical Sciences
Clemson University
email: pbelott at clemson.edu
phone: 864-656-6765
web:   myweb.clemson.edu/~pbelott

On Thu, 2 Dec 2010, njamett at uantof.cl wrote:

> Dear Pietro
> 
> I'm so happy, I did everything you told me and now couenne is working fine.
> 
> I downloaded before the trunk version. But now I'm working with the stable version 0.3.
> 
> Thank you so much for your help.
> 
> Best regards,
> 
> Nathalie Jamett G.
> 
>
>       ----Mensaje original----
>       De: pbelott at clemson.edu
>       Fecha: 01-12-2010 19:45
>       Para: "njamett at uantof.cl"<njamett at uantof.cl>
>       CC: <couenne at list.coin-or.org>, <jvielma at pitt.edu>
>       Asunto: Re: Couenne with Cplex
>
>       Dear Nathalie,
>
>       unfortunately I cannot replicate your problem. The error you are showing
>       appears to be a missing #include in
>       Couenne/src/problem/CouenneSolverInterface.cpp, which defines a template
>       LP solver without ever declaring any OsiCpxSolverInterface. You could
>       change CouenneSolverInterface.cpp and add the lines
>
>       #ifdef COIN_HAS_CPX
>       #include "OsiCpxSolverInterface.hpp"
>       #endif
>
>       right below the other two "#include" commands. However, this is totally
>       unnecessary in the version I have tried, because no object
>       OsiCpxSolverInterface is ever referenced explicitly in that source file.
>
>       More specifically: if I configure Couenne (version stable-0.3) using the
>       command
>
>       ../configure --with-cplex-incdir=/usr/share/cplex122/cplex/include/ilcplex --with-cplex-lib='/usr/share/cplex122/cplex/lib/x86-64_sles10_4.1/static_pic/libcplex.a -lpthread'
>
>       it builds couenne without errors and it solves MINLP problems correctly.
>       One caveat: after solving the LP relaxation, for some reason
>       OsiCpxSolverInterface will print an error message of the form "Cplex error
>       1217: no solution found" or something similar. As far as I can understand,
>       that doesn't really affect the behavior of Couenne, which in fact obtain
>       the right solution from the LP solver and is able to solve the MINLP to
>       global optimality. I'm just anticipating that if you receive that error
>       you shouldn't worry (see related, if outdated, discussion at
>       http://list.coin-or.org/pipermail/osi/2008-June/thread.html#138)
>
>       Can you please email your configuration command and the version of Couenne
>       you are using?
>
>       PS: please direct all questions on Couenne to its mailing list:
>
>       couenne at list.coin-or.org
> 
>
>       --
>       Pietro Belotti
>       Dept. of Mathematical Sciences
>       Clemson University
>       email: pbelott at clemson.edu
>       phone: 864-656-6765
>       web:   myweb.clemson.edu/~pbelott
>
>       On Wed, 1 Dec 2010, njamett at uantof.cl wrote:
>
>       >
>       > Hi
>       >
>       > I was in touch with Mr Belotti. I was working in a windows platform and installing couenne with cplex.
>       >
>       > I had several troubles. So now I'm working in a Linux ubuntu machine.
>       >
>       > The solvers works fine, but when I tried to configure cplex as a subsolver I had the following answer:
>       >
>       > /home/nathalie/Couenne-trunk/Couenne/src/problem/CouenneSolverInterface.cpp: In member function 'bool Couenne::CouenneSolverInterface<T>::isProvenDualInfeasible() const [with T = OsiCpxSolverInterface]':
>       > /home/nathalie/Couenne-trunk/Couenne/src/problem/CouenneSolverInterface.cpp:250:   instantiated from 'void Couenne::CouenneSolverInterface<T>::solveFromHotStart() [with T = OsiCpxSolverInterface]'
>       > ../../../../Couenne/src/main/BonCouenneSetup.cpp:871:   instantiated from here
>       > /home/nathalie/Couenne-trunk/Couenne/src/problem/CouenneSolverInterface.cpp:90: error: incomplete type 'OsiCpxSolverInterface' used in nested name specifier
>       > make[2]: *** [BonCouenneSetup.lo] Error 1
>       > make[2]: se sale del directorio `/home/nathalie/Couenne-trunk/build/Couenne/src/main'
>       > make[1]: *** [all-recursive] Error 1
>       > make[1]: se sale del directorio `/home/nathalie/Couenne-trunk/build/Couenne'
>       > make: *** [all-recursive] Error 1
>       >
>       > Please, can you help me with this error?
>       >
>       > Thank you
>       >
>       > Best regards
>       >
>       > Nathalie Jamett
>       > University of Antofagasta
>       > Chile
>       >
> 
> 
> 
>