[Cbc] Slow CBC sample example

[Stefan Vigerske]

Hi,

the executable uses CbcMain to solve a model. That usually gives much
performance than just calling model.branchAndBound() (as in the example
you cite). There are examples and some interface projects that show how
to use CbcMain:
https://projects.coin-or.org/Cbc/browser/stable/2.4/Cbc/examples/driver3.cpp
https://projects.coin-or.org/Cbc/browser/stable/2.4/Cbc/examples/driver4.cpp
https://projects.coin-or.org/OS/browser/stable/2.1/OS/src/OSSolverInterfaces/OSCoinSolver.cpp
https://projects.coin-or.org/AIMMSlinks/browser/stable/1.0/CbcAimms/src/cbc_interface.cpp
https://projects.coin-or.org/GAMSlinks/browser/trunk/GAMSlinks/src/SolverInterfaces/GamsCbc.cpp

Stefan


Am 31.05.2010 22:30, schrieb Matěj Týč:
> Hello,
> when I successfully build CBC, I also get an executable (that one called
> cbc), that, among other things, accepts MPS files and solves them.
> 
> I can also build an example application that does the same things,
> according the documentation:
> 
> http://www.coin-or.org/Cbc/ch02s02.html
> 
> The problem is that the same MPS file gets solved much faster using the
> compiled (and somewhat more complicated :-) executable, whereas it
> writes a lot of output (even if I try to reduce it) and takes longer
> when using the code from the example.
> 
> Any ideas?
> Regards,
> Matej
> 
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