Hello, i`m using pymathprog 0.3 and when trying to solve a big Binary Integer Program, i get the following error message and the evaluation stops:
: obj = 2.719712443e+007 infeas = 9.756e+001 (1409) 80200: obj = 2.719712443e+007 infeas = 9.756e+001 (1409) 80400: obj = 2.719712443e+007 infeas = 9.756e+001 (1409) 80600: obj = 2.719712443e+007 infeas = 9.756e+001 (1409) 80800: obj = 2.719712443e+007 infeas = 9.756e+001 (1400) 81000: obj = 2.723652533e+007 infeas = 8.235e+001 (1376) 81200: obj = 2.723652533e+007 infeas = 8.235e+001 (1369) Warning: numerical instability (primal simplex, phase I) 81259: obj = 2.723652533e+007 infeas = 8.235e+001 (1368) Warning: numerical instability (primal simplex, phase I) 81299: obj = 2.723652533e+007 infeas = 8.235e+001 (1368) 81400: obj = 2.723810723e+007 infeas = 7.967e+001 (1361) Error: unable to factorize the basis matrix (1) Sorry, basis recovery procedure not implemented yet ios_driver: unable to solve current LP relaxation; glp_simplex returned 5 + 81411: mip = not found yet >= 2.618187908e+007 (341; 1) glp_intopt: cannot solve current LP relaxation What does this mean? Has it something to do with the numerical instability warning? Best Regards, Alex _______________________________________________________________ Neu: WEB.DE DSL bis 50.000 kBit/s und 200,- Euro Startguthaben! http://produkte.web.de/go/02/ _______________________________________________ Help-glpk mailing list [email protected] http://lists.gnu.org/mailman/listinfo/help-glpk
