Gleb Belov

Hi, assume someone implements branch-and-cut... and needs to solve the LP relaxations in different nodes. This means, after solving the LP of one node, we can switch to a very different node (diffe...

Hi, when retrieving duals of linear and quadratic constraints, I noticed that methods GRBgetdblattr(element) interpret the indices as the indices in the subset of only quadratic constraints, or, if...

Hi, when solving a simple quadratic model, Gurobi finishes at root node. Then, trying to retrieve ObjBoundC, we get Unable to retrieve attribute 'ObjBoundC'.Failed to get the best bound. Gurobi err...

From the article "How does Gurobi compute the IIS for infeasible models?" it is not clear what happens for non-convex models (although it is helpful as a starting point). Is there any public inform...

For a modeling system like MiniZinc it would be useful to see the list of parameters supported by the solver. There are functions in gurobi.h allowing access to the list and feasible/default values...

Infeasibility reported when solving with 1 thread, but without the thread option, a feasible solution is found in 1 second. Platform: Debian 9.9, i7-4771 Instance: https://www.dropbox.com/s/v8h1obs...