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lpmethod.py
#!/usr/bin/python # Copyright 2017, 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 %g seconds with Method %d' % (bestTime, bestMethod))
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