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Re: [Help-glpk] glp_analyze_bound
From: |
frnz65 |
Subject: |
Re: [Help-glpk] glp_analyze_bound |
Date: |
Tue, 29 Jun 2010 17:03:47 +0400 |
Andrew Makhorin wrote:
>
>> I'm trying to use glp_analyze_bound:
>
>> double *limit1;
>> double *limit2;
>> int *var1, *var2;
>
>> glp_prob *GLV;
>> GLV = glp_create_prob();
>> glp_read_mps(GLV, GLP_MPS_FILE, NULL, mpscardfile);
>> glp_adv_basis(GLV, 0);
>> glp_simplex(GLV, NULL);
>> glp_print_sol(GLV, "../out/GLV_SOL.dat"); // write the results in
>> this
>> file
>> glp_analyze_bound(GLV, 473, limit1, var1, limit2, var2);
>
>
>> but I do get a bus error when I use glp_analyze_bound.
>
>> What's wrong?
>
> What is a "bus error"? Do you mean something like segmentation fault,
> or what?
>
>
> Yes, I think it is a close relative of a segmentation fault. Here's my
> output:
>
>
> Reading problem data from `GLV_card.mps'...
> Problem: GLV
> Objective: QUAL
> 1902 rows, 34641 columns, 134828 non-zeros
> 34641 integer variables, all of which are binary
> 177016 records were read
> Constructing initial basis...
> Size of triangular part = 1902
> GLPK Simplex Optimizer, v4.44
> 1902 rows, 34641 columns, 134828 non-zeros
> 0: obj = 2.460000000e+02 infeas = 1.762e+03 (0)
> 500: obj = 7.330000000e+02 infeas = 1.243e+03 (0)
> 1000: obj = 1.095000000e+03 infeas = 7.250e+02 (0)
> 1500: obj = 1.380000000e+03 infeas = 3.160e+02 (0)
> 2000: obj = 1.584000000e+03 infeas = 1.210e+02 (0)
> 2500: obj = 1.703000000e+03 infeas = 1.600e+01 (0)
> * 2634: obj = 1.700000000e+03 infeas = 0.000e+00 (0)
> * 3000: obj = 1.964000000e+03 infeas = 0.000e+00 (0)
> * 3500: obj = 2.195000000e+03 infeas = 0.000e+00 (0)
> * 4000: obj = 2.313000000e+03 infeas = 0.000e+00 (0)
> * 4018: obj = 2.315000000e+03 infeas = 0.000e+00 (0)
> OPTIMAL SOLUTION FOUND
> Bus error
>
>
> ....and that's all. No other info.
>
>
>
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>
>
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