SNESFASGetCoarseCorrectionLineSearch

Get the line search applied to the coarse correction update on a particular level of a multiplicative SNESFAS cycle.

Synopsis

#include "petscsnes.h"  
PetscErrorCode SNESFASGetCoarseCorrectionLineSearch(SNES snes, PetscInt level, SNESLineSearch *ls)

Not Collective

Input Parameters

• snes - the SNESFAS nonlinear multigrid context, obtained from the finest level

• level - the level (0 is coarsest) whose coarse correction line search is being retrieved

Output Parameter

• ls - the SNESLineSearch object; NULL if no line search has been requested with SNESFASSetUseCoarseCorrectionLineSearch() or -snes_fas_use_coarse_correction_linesearch

Notes

This does not create the line search as a side effect; it returns whatever SNESLineSearch currently exists for the requested level, or NULL.

Must be called after SNESSetFromOptions().

See Also

SNES: Nonlinear Solvers, SNES, SNESFAS, SNESFASSetUseCoarseCorrectionLineSearch(), SNESLineSearch

Level

advanced

Location

src/snes/impls/fas/fasfunc.c

Implementations

SNESFASGetCoarseCorrectionLineSearch_FAS() in src/snes/impls/fas/fas.c

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