Working with multiple models

Working with multiple models

The Gurobi shell allows you to work with multiple models simultaneously. For example...

gurobi> a = read('c:/gurobi800/win64/examples/data/p0033')
Read MPS format model from file c:/gurobi800/win64/examples/data/p0033.mps
Reading time = 0.00 seconds
P0033: 16 Rows, 33 Columns, 98 NonZeros.
gurobi> b = read('c:/gurobi800/win64/examples/data/stein9')
Read MPS format model from file c:/gurobi800/win64/examples/data/stein9.mps
Reading time = 0.00 seconds
STEIN9: 13 Rows, 9 Columns, 45 NonZeros.

The models() command gives a list of all active models.

gurobi> models()
Currently loaded models:
a : <gurobi.Model MIP instance P0033: 16 constrs, 33 vars>
b : <gurobi.Model MIP instance STEIN9: 13 constrs, 9 vars>

Note that parameters can be set for a particular model with the Model.setParam() method or the Model.Params class, or they can be changed for all models in the Gurobi shell by using the global setParam() method.