Jaromił Najman

Hi, Could you share the logs of a run with different runtimes on your computer? Please note that when running on a shared cluster, differences in runtimes are to be expected except for the case whe...

Hi, Are you able to use Gurobi in Python. You can test it by trying to run one of our example files, e.g., \(\texttt{mip1.py}\) found in \(\texttt{<gurobiFolder>/examples/python}\). If the above do...

Hi Sagnik, Could you provide a minimal working example producing the error you posted?In case, you were able to solve the problem, could you provide the solution of how you achieved it?Best regards...

Hi Carlos, You can use the model.presolve() to get the model constructed by Gurobi. This holds the inequalities defined by the McCormick envelope for bilinear terms. Additional information on Gurob...

Hi Robert, I don't have a favorite example for Lagrangian Relaxation. However, the mip1 example seems to be a good starting point for the application of such specific relaxation as it is small enou...

Hi Anthony, Please also have a look at our Knowledge Base article How do I pass a lower bound to Gurobi? Best regards, Jaromił

Hi Robert, Did you try running the optimization with MIPFocus set to 1? You could also try treating the complicating constraints as lazy constraints. For a guide on how to implement you complicatin...

Hi, I will make the modeling problem slightly easier to better explain how you can reformulate your model. An equivalent explanation can be found here. If I understand correctly you would like to m...

Hi José Miguel, Both of your options should work. It is possible that the parameters you set don't have any visible influence on the solution behavior of your second objective. The changed paramete...

Hi Anthony, It is currently not possible to pass a lower bound (or in case of maximization an upper bound) to Gurobi. I agree that at a first glance passing a lower bound to the solver seems like a...