Hello Narendra, glpsol has a command line parameter --tmlim nnn limit solution time to nnn seconds
Best regards Xypron On 26.07.2012 22:13, Andrew Makhorin wrote: > -------- Forwarded Message -------- > From: Narendra Devta-Prasanna <[email protected]> > To: [email protected] > Subject: glpsol not converging > Date: Thu, 26 Jul 2012 12:23:43 -0700 > > Hi, > > I am relatively new to using ILP solvers and do not understand all the > underlying mathematics. I am using glpsol to solve a routing problem. > For most instance of the problem, I get a solution within minutes. But > in one case, when the size of the problem is bigger, it is not > converging after running for more than 3 days and 10 million iterations. > After about 12500th iteration, the objective function value does not > improve but the tool does not ever stop. > > I have tried different options such as --first, --dfs, --pcost etc but > nothing seems to help. I have also included "--mipgap 0.1" and also > tried with other values but still does not help. Is there a way I can > tell the tool to stop after a certain number of iterations and print the > most optimal solution identified so far and make the results available > through printf commands etc. > > I have looked all over the web for any further clues to solving this. I > really appreciate it if the experts on this mailing list can help with > how to address this issue. > > Thanks and Regards, > -Narendra > > > > > _______________________________________________ > Help-glpk mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/help-glpk > _______________________________________________ Help-glpk mailing list [email protected] https://lists.gnu.org/mailman/listinfo/help-glpk
