petsc-3.4.5 2014-06-29

SNESLINESEARCHL2

 Secant search in the L2 norm of the function. The function norm is evaluated at points in [0, damping] to construct a polynomial fitting. This fitting is used to construct a new lambda based upon secant descent. The process is repeated on the new interval, [lambda, lambda_old], max_it - 1 times.

Options Database Keys

-snes_linesearch_max_it<1> - maximum number of iterations
-snes_linesearch_damping<1.0> - initial steplength
-snes_linesearch_minlambda - minimum allowable lambda

Keywords

SNES, nonlinear, line search, norm, secant

See Also

SNESLineSearchBT, SNESLineSearchCP, SNESLineSearch

Level:advanced
Location:src/snes/linesearch/impls/l2/linesearchl2.c
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages