Silke Horn

This is not possible. You should fix the variables in the original model. How long does presolve take in your models?

Thanks! Could you also share an example definition for open_warehouse_ver?

We do not recommend modifying the presolved model (since, as you noticed yourself, you cannot access the mapping back to the original model). Why can't you fix the variables in the original model?

I am not sure I understand what you are asking. Maybe looking into the basics of linear programming may help.

Hi Domagoj, There are a few things that can introduce non-determinism into your Gurobi runs: Using non-deterministic data structures: When your model is created with input from external data sourc...

Thank you! I can reproduce this using gurobi_cl. We recommend that objective coefficients be no bigger than 1e4, but this violation is still surprising to me.

Hi, You are correct that you cannot access the X attribute before running the optimization. Instead, you can use indicator constraints to model something like this. This article contains additional...

Hi, I cannot reproduce this so far. Could you post a complete log? Are you using any non-default parameter settings? Silke

Hi Ritesh, From the log snippet you posted above, it is impossible to predict how difficult it is to solve the model, but many of our users are solving models of similar sizes. 115 GB of memory sou...

Hi Ritesh, Please have a look at this article. (The short answer is that Gurobi does not support GPUs.) - Silke