Thanks, Xypron. This is exactly what I thought. I'll stick to Michael's solution for the moment.
So, is it indeed the case that glpk does not continue the search after it got terminated due to time-out (so next time I call glp_intopt, it starts the whole process from scratch)? Thanks, Pavel On Fri, Feb 5, 2010 at 5:38 AM, xypron <[email protected]> wrote: > > Hello Pavel, > > the glpk C library comes with hook functions that allow you to trace every > integer solution found. See doc/glpk.pdf. > > In glpk-java I have not implemented the hook functions yet. > http://glpk-java.sourceforge.net > > Best regards > > Xypron > > > Pavel Klinov-3 wrote: >> >> Hello, >> >> If B&C search gets interrupted due to time-out and but then is run >> again, does it start from scratch or is it able to continue from where >> it stopped? Is there a way for it to store all the internal data >> structures and continue? >> >> Basically I want GLPK MIP solver to give me the first "acceptable" >> solution because sometimes it spends a lot of time searching "near" >> the optimal one (as far as I see in the output). I guess the easiest >> would be to use the callback function but this seems problematic since >> I'm invoking GLPK via JNI (by using SWIG wrapper classes). Therefore I >> set a time limit and then check if some solution has been found. If >> not, I'd like to continue the search. >> >> Thanks, >> Pavel >> >> -- >> cheers, >> --pavel >> http://www.cs.man.ac.uk/~klinovp >> >> >> _______________________________________________ >> Help-glpk mailing list >> [email protected] >> http://lists.gnu.org/mailman/listinfo/help-glpk >> >> > > -- > View this message in context: > http://old.nabble.com/Continuing-search-after-time-out-tp27455075p27463743.html > Sent from the Gnu - GLPK - Help mailing list archive at Nabble.com. > > > > _______________________________________________ > Help-glpk mailing list > [email protected] > http://lists.gnu.org/mailman/listinfo/help-glpk > -- cheers, --pavel http://www.cs.man.ac.uk/~klinovp _______________________________________________ Help-glpk mailing list [email protected] http://lists.gnu.org/mailman/listinfo/help-glpk
