Hi, Anybody know how to use CBC MILP Solver properly?
Here's the log / result of CBC run with my model (below). Thanks. Noli ############## Nolis-MacBook-Pro:Case_Studies nsicad$ /Users/nsicad/Documents/Cbc-2.7.7/bin/cbc -import TimberHarvestModel_0025p_mps.mps -reduce ifmove -solve Welcome to the CBC MILP Solver Version: 2.7.7 Build Date: Nov 10 2012 command line - /Users/nsicad/Documents/Cbc-2.7.7/bin/cbc -import TimberHarvestModel_0025p_mps.mps -reduce ifmove -solve (default strategy 1) At line 8 NAME TimberHa At line 9 ROWS At line 474 COLUMNS At line 1252 RHS At line 1477 BOUNDS At line 1727 ENDATA Problem TimberHa has 463 rows, 255 columns and 1181 elements Coin0008I TimberHa read with 0 errors Option for reduceAndSplitCuts changed from off to ifmove Continuous objective value is 0 - 0.00 seconds Cgl0003I 0 fixed, 0 tightened bounds, 86 strengthened rows, 0 substitutions Cgl0003I 0 fixed, 0 tightened bounds, 15 strengthened rows, 0 substitutions Cgl0004I processed model has 213 rows, 196 columns (192 integer) and 903 elements Cbc0038I Solution found of 0 Cbc0038I Before mini branch and bound, 192 integers at bound fixed and 4 continuous Cbc0038I Mini branch and bound did not improve solution (0.02 seconds) Cbc0038I After 0.02 seconds - Feasibility pump exiting with objective of 0 - took 0.00 seconds Cbc0012I Integer solution of 0 found by feasibility pump after 0 iterations and 0 nodes (0.02 seconds) Cbc0001I Search completed - best objective 0, took 0 iterations and 0 nodes (0.02 seconds) Cbc0035I Maximum depth 0, 0 variables fixed on reduced cost Cuts at root node changed objective from 0 to 0 Probing was tried 0 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds) Gomory was tried 0 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds) Knapsack was tried 0 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds) Reduce-and-split was tried 0 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds) Clique was tried 0 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds) MixedIntegerRounding2 was tried 0 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds) FlowCover was tried 0 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds) TwoMirCuts was tried 0 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds) Result - Optimal solution found Objective value: 0.00000000 Enumerated nodes: 0 Total iterations: 0 Time (CPU seconds): 0.02 Time (Wallclock seconds): 0.04 Total time (CPU seconds): 0.02 (Wallclock seconds): 0.05 Nolis-MacBook-Pro:Case_Studies nsicad$ _______________________________________________ Help-glpk mailing list [email protected] https://lists.gnu.org/mailman/listinfo/help-glpk
