Originally posted by: stef44

Hi all,

My question is the following:

Is it possible, for example to read .MPS files in CPLEX and then import that model to CP Optimizer ? 

Short story, is it possible to import a MIP model (from CPLEX) to CP Optimizer?

Any answer is appreciated!
Thank you

Originally posted by: PhilippeLaborie

Hello Stefana,
It should be possible to import the MIP model into a concert IloModel using IloCplex (see distributed CPLEX example in examples/src/ilolpex2.cpp) and then load this IloModel into a CP engine (IloCP) and solve it.
Philippe

Originally posted by: suji248

Hello

Is the same technique possible in C# ? I have a MPS file but finding a feasible solution is a challenge. Is it possible to import the Model and then solve using CP engine? 

Originally posted by: PhilippeLaborie

Not possible in C#. See https://www.ibm.com/developerworks/community/forums/html/topic?id=0019a563-164e-44f4-b2a8-4671e20184ed&ps=25#repliesPg=0

Originally posted by: pchtsp

Hello there!

Now that we've opened the pandora box of programming languages... is there any support for importing MPS files to CPO via the python docplex API? Or the older cplex API?

Alternatively, is there any support for using CPO as a command line app with an MPS file as input argument and writing a solution file as output? In a similar way to what CPLEX offers?

thanks!

Franco

Originally posted by: Olivier OUDOT

Hello Franco,

No, it is impossible to import a MPS file with the Python API of docplex.cp. 

CPO command line is available with the CP Interactive process (cpoptimizer.exe) but it only reads CPO files.

Currently, the only way is to write a C++ program that:

 - import the MPS file using a IloCplex (cplex.importModel())

 - retrieve the IloModel

 - then solve the IloModel using a IloCP.

Optionally, you can also use the IloCP to export the model in CPO format, which is then importable in both Python and cpoptimizer.exe.

Originally posted by: cuiyouzhi0000

Hi Olivier,

Besides C++, could we do this in Java to import MPS file in CPLEX and solve it in CP?

John