Interactive Shell Tutorial: Working with Multiple Models

Please note that starting with version 11.0.2, the Gurobi Interactive Shell has been deprecated. 

Previous: Interactive Shell Tutorial: Changing Parameters

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

gurobi> a = read("/opt/gurobi1103/linux64/examples/data/p0033")
Read MPS format model from file /opt/gurobi1001/linux64/examples/data/p0033.mps
Reading time = 0.00 seconds
P0033: 16 rows, 33 columns, 98 nonzeros
gurobi> b = read("/opt/gurobi1103/linux64/examples/data/stein9")
Read MPS format model from file /opt/gurobi1103/linux64/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, Parameter changes: LogFile=gurobi.log>
b : <gurobi.Model MIP instance STEIN9: 13 constrs, 9 vars, Parameter changes: LogFile=gurobi.log>

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.

Further information

• What is the Gurobi Interactive Shell (gurobi.sh or gurobi.bat)?