Re: [Help-glpk] Translated MPS (fixed and freemps) and CPLEX (LP) from MathProg Model have 0.000 Objective function whiel MathProg Model has correct one

[Noli Sicad]

Hi,

This particular problem is only in this mathprog model.

When I changed the Period from Period 6 to Period 10 for the planning horizon.

GLPK Solver translates the mps model correctly.

Both models (mathprog and mps) produce the same objective function.

Thanks.

Noli



On 3/13/16, Noli Sicad <address@hidden> wrote:
> Hi,
>
> Translated MPS (fixed and freemps) and CPLEX (LP) from MathProg Model
> have 0.000 Objective function whereas the MathProg has correct
> objective function ( 7.153413121e+07)
>
> What causes these problems, not getting the right results?
>
> The logs of the 2 models (MathProg and translated fixed MPS) below.
>
> Thanks.
>
> Noli
>
> ~~~~~~~~~~~~
> Here's log of MathProg Model
> ~~~~~
>
> Model has been successfully generated
> GLPK Simplex Optimizer, v4.59
> 25482 rows, 2988 columns, 7498 non-zeros
> Preprocessing...
> 486 rows, 2513 columns, 4773 non-zeros
> Scaling...
>  A: min|aij| =  1.000e+00  max|aij| =  1.594e+02  ratio =  1.594e+02
> GM: min|aij| =  9.250e-01  max|aij| =  1.081e+00  ratio =  1.169e+00
> EQ: min|aij| =  8.595e-01  max|aij| =  1.000e+00  ratio =  1.163e+00
> Constructing initial basis...
> Size of triangular part is 486
> *     0: obj =  -0.000000000e+00 inf =   0.000e+00 (2250)
> *   500: obj =   5.474891825e+07 inf =   0.000e+00 (691) 4
> *  1000: obj =   7.153360252e+07 inf =   0.000e+00 (19) 4
> *  1024: obj =   7.153413121e+07 inf =   0.000e+00 (0)
> OPTIMAL LP SOLUTION FOUND
> Time used:   0.1 secs
> Memory used: 55.8 Mb (58530515 bytes)
> ====================================
>
> Net Present Value = 71534131.21
>
> ====================================
>
> Here's log of fixed MPS
>
> ~~~~
> GLPSOL: GLPK LP/MIP Solver, v4.59
> Parameter(s) specified in the command line:
>  --mps Model_1_P6_classic.mps
> Reading problem data from 'Model_1_P6_classic.mps'...
> Problem: Model_I_
> Objective: MaxNPV1
> 25482 rows, 2988 columns, 7498 non-zeros
> 30974 records were read
> One free row was removed
> GLPK Simplex Optimizer, v4.59
> 25481 rows, 2988 columns, 5248 non-zeros
> Preprocessing...
> 486 rows, 2513 columns, 4773 non-zeros
> Scaling...
>  A: min|aij| =  1.000e+00  max|aij| =  1.594e+02  ratio =  1.594e+02
> GM: min|aij| =  9.250e-01  max|aij| =  1.081e+00  ratio =  1.169e+00
> EQ: min|aij| =  8.595e-01  max|aij| =  1.000e+00  ratio =  1.163e+00
> Constructing initial basis...
> Size of triangular part is 486
> *     0: obj =   0.000000000e+00 inf =   0.000e+00 (0)
> OPTIMAL LP SOLUTION FOUND
> Time used:   0.0 secs
> Memory used: 8.1 Mb (8535148 bytes)
>