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## Re: [Help-glpk] MIP Solvers (i.e CBC, CPLEX, GLPK, GUROBI, LPSOLVE, SCIP

 From: Noli Sicad Subject: Re: [Help-glpk] MIP Solvers (i.e CBC, CPLEX, GLPK, GUROBI, LPSOLVE, SCIPC, SCIPL, SCIPS and XPRESS) Benchmark Date: Mon, 19 Nov 2012 10:55:29 +1100

```>
> LPSOLVE can read and solve mathprog.

For the sake of LPSolve.

Here is the log / result of running "my hard to solve MIP model" (below).

https://gist.github.com/4108017

Noli

~~~~~~~~~
TimberHarvestModel_0025p_mps.mps -Bw -stat
Constraints: 463
Variables  : 255
Integers   : 249
Semi-cont  : 0
SOS        : 0
Non-zeros  : 1181       density=1.000296%

Absolute Ranges:

Minima                                  Maxima

Matrix Coeficients:
A(R0000095, C0000250) = 0.97500000      A(R0000094, C0000201) = 10218.57600001
A(R0000005, C0000001) = 1.00000000      A(R0000093, C0000200) = 10161.64800001
A(R0000100, C0000250) = 1.02500000      A(R0000092, C0000199) = 10095.23200000
A(R0000089, C0000178) = 143.75200000    A(R0000091, C0000198) = 10009.84000001
A(R0000090, C0000179) = 179.69000000    A(R0000090, C0000197) = 9933.93600001

Obj. Vector:
c(C0000097) = 8.88888889                c(C0000196) = 31110.00000000
c(C0000098) = 65.18518519               c(C0000190) = 28650.00000000
c(C0000099) = 165.92592593              c(C0000001) = 28320.00000000
c(C0000039) = 1370.86419750             c(C0000232) = 27030.00000000
c(C0000027) = 1532.83950620             c(C0000013) = 26430.00000000

RHS Vector:
b(R0000002) = 1.00000000                b(R0000002) = 1.00000000

Value of objective function: 0

Actual values of the variables:
C0000001                        0
C0000002                        0
C0000003                        0
C0000004                        0
C0000005                        0
C0000006                        0
C0000007                        0
C0000008                        0
C0000009                        0
C0000010                        0
C0000011                        0
C0000012                        0
C0000013                        0
C0000014                        0
C0000015                        0
C0000016                        0
C0000017                        0

.
.
.

C0000239                        0
C0000240                        0
C0000241                        0
C0000242                        0
C0000243                        0
C0000244                        0
C0000245                        0
C0000246                        0
C0000247                        0
C0000248                        0
C0000249                        0
C0000250                        0
C0000251                        0
C0000252                        0
C0000253                        0
C0000254                        0
C0000255                        0