Dual tolerance

Adjust dual tolerance within the GCMMA/MMA search. Start from its initial value while establishing a valid model.

Where to find it

System Solver → Optimization → GCMMA/MMA → Dual tolerance

How to use it

First solve the starting design. Change this control deliberately and compare convergence, evaluations and feasibility with the previous run.

Initial value

1e-10.

Result

Compare the final objective, constraint values, design and termination reason together.

Troubleshooting

Limits on iterations or evaluations can end a search before an optimum is reached. Inspect feasibility and termination reason, then verify the final design with a solve.