Contents
How do I make my cplex faster?
CPLEX Performance Tuning for Mixed Integer Programs
- Try default settings first.
- Try CPLEX’s automatic tuning tool.
- Examine the node log for causes of slow performance.
- Try setting probing to 3 (its most aggressive setting).
- Experiment with the MIP emphasis parameter.
Does cplex use branch and bound?
For problems that contain integer variables, CPLEX uses a branch-and-bound approach.
Is gurobi fast?
The Gurobi Optimizer was designed from the ground up to be the fastest and most powerful solver available for your mathematical optimization problems. Gurobi has a long history of winning standard public benchmark tests and has the fastest overall solve times for all model types evaluated in the tests.
How do you calculate duality gap?
The duality gap is the non-negative number p∗ − d∗. We say that strong duality holds for problem (8.1) if the duality gap is zero: p∗ = d∗.
What should the MIP gap be in CPLEX?
Since CPLEX stops with a solution that has a gap of 0.57%, I would assume that you configured an MIP-gap <1%. If you are interested in a solution with proven optimal, you should change the MIPGap parameter to zero. See also here. Thanks for contributing an answer to Stack Overflow!
Which is the best solution for the gap in CPLEX?
What I understand from this, is that the best integer solution (for the objective function) found has the value of 438.1448, whereas the relaxed solution (non integer values) has the value of 435.6381 as best bound solution. Does this mean that the solution still has that small gap, however it is proven to be the optimal solution?
What kind of optimization problem is CPLEX 12.7.0?
This is a part of the engine-log output that I get from a small-scale mixed integer linear optimization problem that I solved in CPLEX 12.7.0
How are regions split into sub-regions in CPLEX?
These sub-regions get split into sub-sub-regions, and so on. Within each region, the original problem is modified to force variables to fall within the region.