Internal structure for storing trust region settings. More...

Public Attributes
double	cg_tol = 1e-8
	cg tol

size_t	min_cg_iterations = 0
	min cg iters

size_t	max_cg_iterations = 10000
	max cg iters should be around # of system dofs

size_t	max_cumulative_iteration = 1
	max cumulative iterations

double	min_tr_size = 1e-13
	minimum trust region size

double	t1 = 0.25
	trust region decrease factor

double	t2 = 1.75
	trust region increase factor

double	eta1 = 1e-9
	worse case energy drop ratio. trust region accepted if energy drop is better than this.

double	eta2 = 0.1
	non-ideal energy drop ratio. trust region decreases if energy drop is worse than this.

double	eta3 = 0.6
	ideal energy drop ratio. trust region increases if energy drop is better than this.

double	eta4 = 4.2
	parameter limiting how fast the energy can drop relative to the prediction (in case the energy surrogate is poor)

Detailed Description

Internal structure for storing trust region settings.

Definition at line 218 of file equation_solver.cpp.

The documentation for this struct was generated from the following file:

Public Attributes