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Has anyone used the GLPK for production systems? I have an application currently powered by CPLEX and wish to replace it with a free software alternative.

It is used to solve a large MIP (thousands of variables) for a scheduling problem. I would like to know whether GLPK is mature enough to handle this.

Thanks

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I am not sure about GLPK as I do not have much experience with it. I am able to recommend https://projects.coin-or.org/Clp

It is open-source, written by IBM Research as part of their COmputational INfrastructure for Operations Research (COIN-OR) group.

Let me know how it works! Good luck, m

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For a c# wrapper check out astarte.csr.unibo.it/coinORwrapper/coinORwrapper.htm
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I've been using GLPK on 200,000+ variable problems - solves them in a few seconds, so yes if you can define your problem and don't mind C/C++ it's fine.

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Are you solving a 200,000 variable MIP with GLPK? Be careful with what you recommend, the difficulty of MIP's varies a lot, even among problems of the same number of variables.

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