Hello John First up, you need to join the [help-glpk] list if you wish to engage further:
http://www.gnu.org/software/glpk/#lists Some thoughts on slow models are covered here: http://en.wikibooks.org/wiki/GLPK/Troubleshooting#Slow_models You didn't say whether you were using GLPSOL or the GLPK library. I take it is the former. HTH, Robbie ------------------------------------------------------------ To: [email protected] Subject: Low performance when solve MIP problem with glp intopt in GLPK From: John <[email protected]> Date: Thu, 27 Jun 2013 13:36:30 +0800 (CST) ------------------------------------------------------------ > Hello, > > It runs over 2hours when solve a MIP problem > with 4 rows and 4000 columns. I think it should > be completed in several minutes. Could you help > me to find out the problem or give some > suggestions on how to improve the performance? > > GLPK Version: 4.51 > Hardware and Software Information: > Processor: Intel(R) Xeon(R) CPU E7-4850 @ 2.00GHz 2.00 GHz (4 > processors) > RAM: 8.00GB > System Type: 64bit Operation System > OS: Windows Server 2008 R2 Standard(Service Pack 1) > Performance Information when running: > CPU Usage: 25% > Memory Usage:150,900K > Page Faults:75,000 > > Regards, > John --- Robbie Morrison PhD student -- policy-oriented energy system simulation Technical University of Berlin (TU-Berlin), Germany University email (redirected) : [email protected] Webmail (preferred) : [email protected] [from Webmail client] _______________________________________________ Help-glpk mailing list [email protected] https://lists.gnu.org/mailman/listinfo/help-glpk
