Riley Clement

Hi Fengyu,Is the reason Gurobi has to solve SOCP in a QCP format?I don't think so.  The logs indicate the constraints are recognized as SOCP so then our SOCP solver is used.  What is different abou...

Hi Christian,The barrier algorithm can't be warm started, but crossover can be (since it is simplex based).It sounds quite possible it would just be faster to solve via barrier (without crossover) ...

Hi Lanette,Gurobot would be your best bet.- Riley

Hi Fengyu,Yes, dual values are available for quadratic constraints.  You can find “QCPi” and other quadratic constraint attributes here: https://docs.gurobi.com/projects/optimizer/en/current/refere...

Hi Fengyu,It will be good for you to read this article: How do I resolve the error "Model is infeasible or unbounded"? Then follow it with How do I determine why my model is infeasible?When you com...

Hi Sean,I can confirm this is unintended behavior and we've added an item to our development backlog to patch it in a future release.We don't do the calculation in place, and we don't modify the ar...

Hi Sean, I'll ask our dev team to take a look.  Which version of gurobipy are you using?Thanks,Riley

Hi Lorenzo,Unfortunately I don't think the NodeLimit=1 approach will work (and I suggested it).  I think we will just see termination of the solve where we would have otherwise seen branching.At th...

Hi Saeed,I think it is worth mentioning that you could run either the callback approach, or the classic approach twice, and change the Seed parameter between them, and you would find a different nu...

Hi Saeed,Gurobot might need more sleep, it is definitely hallucinating here.  There are no parameters (or functionality) related to Benders Decomposition in Gurobi.- Riley