Michael,
First, I'm sorry for not reading your message with the proper attention; second, thank you for being so nice and patient,
It was the default tolerance that was returning a suboptimal value.
Thank you so much, you saved my day!
Search found 3 matches
- 6 years ago
- Forum: Modeling
- Topic: MIP - CPLEX solver does not give optimal solution in a facility location problem
- Replies: 4
- Views: 3802
- 6 years ago
- Forum: Modeling
- Topic: MIP - CPLEX solver does not give optimal solution in a facility location problem
- Replies: 4
- Views: 3802
Re: MIP - CPLEX solver does not give optimal solution in a facility location problem
Hi Michael, Thank you for your suggestion. Yes, I have tried it before, and the result is the same as without "scaleopt = 0". It seems that my model is first minimizing the transportation cost, and when that is set, it calculates the capital investment. Which is not what it should do, and ...
- 6 years ago
- Forum: Modeling
- Topic: MIP - CPLEX solver does not give optimal solution in a facility location problem
- Replies: 4
- Views: 3802
MIP - CPLEX solver does not give optimal solution in a facility location problem
I'm somewhat new to GAMS, and totally new to this forum, I was hoping that someone could help me to understand why my model "All13" gives a solution that differs from my model "max7" (attached). I hoped that the model All13 (obj= 26,608,552) would give the minimum cost over all c...