PCMGGetSmootherDown

Gets the KSP context to be used as smoother before coarse grid correction (pre-smoother).

Synopsis

#include "petscksp.h" 
PetscErrorCode PCMGGetSmootherDown(PC pc, PetscInt l, KSP *ksp)

Not Collective, ksp returned is parallel if pc is

Input Parameters

• pc - the multigrid context

• l - the level (0 is coarsest) to supply

Output Parameter

• ksp - the smoother

Note

Calling this will result in a different pre and post smoother so you may need to set options on the post smoother also

See Also

PCMG, PCMGGetSmootherUp(), PCMGGetSmoother()

Level

advanced

Location

src/ksp/pc/impls/mg/mgfunc.c

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Index of all PC routines
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