Zhen Chen

Thanks very much Marika! Your comments gave me the inspiration to check my codes. After checking for several hours, I found the issue: the definition of a decision variable std::vector<GRBVar> the...

For example, one model is running sucessfully, the following code get value 1, models[0].get(GRB_IntAttr_SolCount) but very strange that it can't get the value of its vars

Thanks Marika very much for the reply.  The weired thing is that the codes sometimes run sucessfully while sometimes not. If there is something wrong in the model setting, it should fail every time...

Thanks very much for the reply.  I still can't find the reason that why sometimes runing sucessfully, while sometimes showing GRBException error. I guess may be due to the memory or cache issues si...

Thanks very much Erik for the answer. I am looking forwad for applying different new features of gurobi in the future.