SNESLineSearchSetType

Sets the linesearch type

Synopsis

#include "petscsnes.h" 
PetscErrorCode SNESLineSearchSetType(SNESLineSearch linesearch, SNESLineSearchType type)

Logically Collective

Input Parameters

• linesearch - linesearch context

• type - The type of line search to be used

Available Types

• SNESLINESEARCHBASIC - (or equivalently SNESLINESEARCHNONE) Simple damping line search, defaults to using the full Newton step

• SNESLINESEARCHBT - Backtracking line search over the L2 norm of the function

• SNESLINESEARCHL2 - Secant line search over the L2 norm of the function

• SNESLINESEARCHCP - Critical point secant line search assuming F(x) = grad G(x) for some unknown G(x)

• SNESLINESEARCHNLEQERR - Affine-covariant error-oriented linesearch

• SNESLINESEARCHSHELL - User provided SNESLineSearch implementation

Options Database Key

• -snes_linesearch_type - basic (or equivalently none), bt, l2, cp, nleqerr, shell

See Also

SNESLineSearch, SNESLineSearchType, SNESLineSearchCreate(), SNESLineSearchType, SNESLineSearchSetFromOptions(), SNESLineSearchGetType()

Level

intermediate

Location

src/snes/linesearch/interface/linesearch.c

Examples

src/snes/tutorials/ex1f.F90
src/ts/tutorials/ex22.c
src/ts/tutorials/ex22f.F90
src/ts/utils/dmplexlandau/tutorials/ex1f90.F90

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