#!/usr/bin/python # Copyright 2012, Gurobi Optimization, Inc. # Solve a model with different values of the Method parameter; # show which value gives the shortest solve time. import sys from gurobipy import * if len(sys.argv) < 2: print 'Usage: lpmethod.py filename' quit() # Read model m = read(sys.argv[1]) # Solve the model with different values of Method bestTime = m.params.timeLimit bestMethod = -1 for i in range(3): m.reset() m.params.method = i m.optimize() if m.status == GRB.status.OPTIMAL: bestTime = m.Runtime bestMethod = i # Reduce the TimeLimit parameter to save time with other methods m.params.timeLimit = bestTime # Report which method was fastest if bestMethod == -1: print 'Unable to solve this model' else: print 'Solved in', bestTime, 'seconds with Method:', bestMethod