Decreasing the number of iteration after evaluation error

[benoitpaillard]

Hi all,
I noticed that when the tolerance is not reached during shape optimization, we get 'Cutting back alpha', and the optimizer will keep trying 50 times by halving alpha each time. Is there any way to control this number ? I'd like to be able to stop at 5 or 10 tries.

thanks !!

[friedenhe]

If you use IPOPT, you may see "Cutting back alpha" in opt_IPOPT.txt. It means that the default step size in the line search fails and the optimizer is reducing the step size. It should not be related to max iterations of the optimizer.