Is it possible, either in the interactive optimizer (preferred) or through the Java API, to run the tuning tool on a MIP model while providing a feasible solution through a .sol file? I'm interested in tuning the performance of CPLEX in proving optimality/tightening the lower bound (min problem) when an optimal or near-optimal solution is known. I looked at the tuning tool information in the user's manual but saw no mention of MIP starts.

Thanks,

Paul

Originally posted by: Laci Ladanyi

I'm sorry, Paul, but it is not possible. The tuning tool by necessity sets the advance indicator to false and that disables the use of a MIP start. Still, it is a reasonable request that if something can be set before optimization then it should be possible to set the same thing for every optimization during tuning. Right now that is possible for parameters, but not possible for anything else. I have recorded your idea as a user wish.

--Laci

Thanks, Laci. I expected as much. Also, thanks for adding it to the wish list -- saves me the effort.

-- Paul