SNESLINESEARCHNLEQERR#
Error-oriented affine-covariant globalised Newton algorithm of Deuflhard [Deu11] This linesearch is intended for Newton-type methods which are affine covariant. Affine covariance means that Newton’s method will give the same iterations for F(x) = 0 and AF(x) = 0 for any nonsingular matrix A. This is a fundamental property; the philosophy of this linesearch is that globalisations of Newton’s method should carefully preserve it.
Options Database Keys#
-snes_linesearch_damping<1.0> - initial step length
-snes_linesearch_minlambda<1e- 12> - minimum step length allowed
Note#
Contributed by Patrick Farrell patrick.farrell@maths.ox.ac.uk
References#
Peter Deuflhard. Newton Methods for Nonlinear Problems. Volume 35. Springer-Verlag, Berlin, Heidelberg, 2011. ISBN 978-3-642-23898-7. doi:10.1007/978-3-642-23899-4.
See Also#
SNES: Nonlinear Solvers, SNESLineSearch, SNES, SNESLineSearchCreate(), SNESLineSearchSetType()
Level#
advanced
Location#
src/snes/linesearch/impls/nleqerr/linesearchnleqerr.c
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages