
From:  Noli Sicad 
Subject:  Re: [Helpglpk] MIP Solvers (i.e CBC, CPLEX, GLPK, GUROBI, LPSOLVE, SCIPC, SCIPL, SCIPS and XPRESS) Benchmark 
Date:  Mon, 19 Nov 2012 09:59:58 +1100 
Hallo Xypron, > you are right that the GMPL interpreter has a value on its own. > > Cf. > http://en.wikibooks.org/wiki/GLPK/Mixing_GLPK_with_other_solver_packages > > Unfortunately the interfaces between GLPKGMPL and other solvers tend > to be one time efforts without further maintenance. Yes, I have been outputting my MIP model into freeMPS and MPS format and trying to use CBC and LPSolve but I did not manage to get the desired resutls. Here attached are the freeMPS and MPS of the Timber Harvesting Model with Adjacents contrailnts and ever tight evenflows (i.e. + / 2.5 % from the previous harvest). This is smoothing of the harvest. I would like to see some benchmark results on this model using CBC, LPSolve, CPLEX, Gurobi, etc. Anybody using CBC and LPSolve, please tell how do you solve this model and how long it takes to solve it. GLPK/Mathprog with pcost switch solve this model in 37m39.289s. ####### Model has been successfully processed real 37m39.289s user 37m37.011s sys 0m1.930s Done. ######## Thanks in advance. Regards, Noli
TimberHarvestModel_0025p_freemps.mps
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TimberHarvestModel_0025p_mps.mps
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