Re: [Help-glpk] Help with time limit in binary integer programming

[xypron]

Hello Yang,

GLPKMEX was not updated since 2007.

It uses the following code to set the time limit:
        for (int i = 0; i < NRealP; i++)
                lpx_set_real_parm (lp, RParam[i], glpRealParam[i]);

In the current API the maximum time for branch and bound should be passed
when calling glp_intopt.

I see two solutions:
- use an old version of GLPK. 4.29 should work. GLPK versions prior to 4.18
are not supported by GLPKMEX.
- rewrite GLPKMEX.

Best regards

Xypron


Yang Yu wrote:
> 
> Hi,
> 
> I'm trying to use glpkMex with GLPK to solve some binary 
> integerprogramming problem in matlab. Due to the situation that the 
> problem size is sometimes quite big, I need the solver to terminate 
> before it reaches some time limit.
> However the 'param.tmlim' seems only work for linear programming cases 
> but not integer programming cases, i.e. the vartype has to be 'C' but 
> not 'I' or 'B'.
> Can anyone help me with this. Many thanks for your time!!
> 
> 
> Best Regards
> Yuyang
> 
> 
> 
> 
> 
> _______________________________________________
> Help-glpk mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/help-glpk
> 
> 

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