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## Re: [Help-glpk] Is it possible to feed glpsol with a feasible initial so

**From**: |
Andrew Makhorin |

**Subject**: |
Re: [Help-glpk] Is it possible to feed glpsol with a feasible initial solution to a MIP problem? |

**Date**: |
Fri, 06 Apr 2018 12:13:01 +0300 |

On Thu, 2018-04-05 at 14:40 -0300, Alejandro Pascual wrote:
>* Hi,*
>* *
>* I am working on a MIP problem for which glpsol can't find a feasible*
>* solution in a reasonable amount of time. However, fixing the values of*
>* the integer variables (which are all binary) to one, I can get glpsol*
>* to find an optimum solution rather quickly. Is it possible to feed*
>* this solution as initial (suboptimal) solution of the original*
>* problem?*
Yes. Save the mip solution found with 'glpsol ... -w FILENAME' and then
specify it as initial one 'glpsol ... --ini FILENAME'.
BTW, did you try using --fpump or --proxy to find a feasible solution?
>* *
>* I have read in the help-list that this was not possible with MathProg*
>* in 2007, but maybe now it is. If it is not, what would be the most*
>* direct way to hack the code in order to do so?*
>* *
>* Regards,*
>* Alejandro Pascual*
>* *
>* _______________________________________________*
>* Help-glpk mailing list*
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>* https://lists.gnu.org/mailman/listinfo/help-glpk*
>* *