Sonja Mars

Hi Luca, It is definitely possible to do this, we have other users doing it. We at Gurobi don't have experience with Spark. However, the setup can be a bit tricky. We had another user reporting thi...

Hi, This seems to be a tricky model where Gurobi needs to process a lot of nodes to get anywhere. As Greg already mentioned node files are a good way of reducing the memory load. Also you can try t...

Hi Jason, Gurobi does not support this directly. However, you can easily import a solution as MIP start and see if Gurobi takes it. If it is not feasible Gurobi will let you know in the log file. A...

Hi Mirka, What you are trying to set is the Lazy Constraint parameter. This parameter tells Gurobi that you are going to add lazy constraints via a callback.  If you want to add a few constraints o...

What kind of academic license are you using? Distributed Optimization is not enabled by default on free academic named user licenses but it is enabled for academic site licenses (floating use licen...

What tool are you using? Did you provide a full path to the log file location? It is possible that you have to additionally set something like outputflag.  You say the runtime can depend on the op...

Hi Theresa, Can you share some log files or snippets from the log files (I guess the 33 hours log might be a bit long for a post)? This would be helpful to understand a bit better what is going on....

This is no problem, you can simply request a new license from our website. No need to uninstall Gurobi. Please also see here: How do I renew my free individual academic or free trial license? Best,...

Hi, I am sorry, I don't see the issue in the log. It looks very different from the log of the original post. However, this is quite a big model with 3 million variables 0.5 million constraints, and...

Hi Ibrahim, Can you share a log file or parts of a log file that show the important stages of the solving? Thanks,   Sonja