Originally posted by: khadeejah

Hi ,

I'm solving a MIP model . 5849 constraints , 2968 variables and 20,162 non-coefficients (which i think do not need long hors to get solved). however its taking days to converge to optimality on a high speed PC. I need to know if that is normal for that problem size? 

regards,

aya

When I run your model here with CPLEX 12.8 it is immediately claimed unbounded. Are you sure you attached the correct model/data?

If the data is correct, are you sure it is actually solving that takes so long? Or could it be the conflict refiner or the calculation of a relaxation that kick in after infeasibility was proven? Can you disable conflicts and relaxations in the settings file and see what happens?