PETSc version 3.17.4
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# 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

### Notes

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

PCMGGetSmootherUp(), PCMGGetSmoother()

### Level

advanced

### Location

src/ksp/pc/impls/mg/mgfunc.c
Index of all PC routines
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Index of all manual pages