Matthias Miltenberger

Hi Zixun, The error comes from this line: GRBEnv env = GRBEnv(true); You are instructing Gurobi to create an empty environment (GRBEnv()) by specifying the optional parameter \(\texttt{empty=true}\...

Hi Thomas, Linux ARM support is tracked as a feature request. We cannot say when this might be available. Best regards,Matthias

Hi Max, A full basis description always contains \(m+n\) elements. VBasis shows the basis status of variables, while CBasis shows the basis status of constraints. Consider this example: MinimizeSub...

Hi Mathias, We recently moved the gurobipy packages onto the official PyPI server, so you can just call pip install gurobipy to install the latest version. In general, it is not recommended to spec...

This may happen due to a quick succession of terminating one job and starting another on another machine. You are allowed to run two jobs at the same time on two different machines and you can also...

Hi Martin, Currently, these are the available OptiMods: The OptiMods Gallery — Gurobi OptiMods 1.1.1dev0 documentation (readthedocs-hosted.com) There is a Mod implementing the Minimum-Cost Flow. I ...

Hi Enrico, Yes, that's correct! You should be able to set it after the optimization, but then you would need to call optimize() a second time, warm starting from the previous state. Cheers,Matthias

Hi Enrico, The Pi and RC attributes are available for infeasible or unbounded models but you need to set the InfUnbdInfo parameter to 1. I hope that answers your question. Cheers,Matthias

Hi Enrico, I would query the status (Optimization Status Codes) and only get the dual solution when it is OPTIMAL (2). Furthermore, you should check that IsMIP is false. That should be sufficient t...

Hi Sanket, The only way I can think of to incorporate the results from tools like Porta or Polymake into Gurobi is via callbacks. But I don't think this is going to help you much because you only h...