Sonja Mars

Thanks for all the details, we will handle your issue inside a regular support request. Best regards,   Sonja

What do you mean by "sometimes you just see"? You are doing the exact same thing and sometimes in the Gurobi log the extra line is printed and sometimes not? Gurobi by default will try to use as mu...

On a Mac for Gurobi verison 8.1.1 you normally find this in /Library/gurobi811/mac64/examples/build/DOTNETCore2 Best,  Sonja

OK, cool. This confirms that no cuts are generated and these are more or less heuristics that generate these lines.   Sonja

Hi Fan,   Gurobi is not inserting cuts if you turn off cuts. However, there are also other things going on in the root node, like for examples heuristics and this can also cause a log line to be pr...

Hi, It can indeed happen, the number of cut passes (how often and how aggressive Gurobi does apply cutting planes) depends on many factors and so it can happen that you end up with a different MIP ...

Hi, Can you show us some sample code with outputs of what you are doing? Also what programming language are you using? Are you sure you are using the same precision for these values/comparisons? Be...

Hi, You can add user cuts inside callbacks, but please be aware of the fact that they have to be globally valid. Please also see here for more details. Gurobi already has Gomory cuts implemented. A...

Hi, It is not really possible to predict how much memory the solver will need to solve your problem just from the number of variables. It also depends on the number of constraints and nonzeros in y...

Hi, First of all, please note there is no need to call m.update() for Gurobi v8 in your code. Also I don't understand, what is your question/problem/issue. Thanks,   Sonja