PCGAMGSetNSmooths#
Set number of smoothing steps (1 is typical) used to construct the prolongation operator
Synopsis#
#include "petscpc.h"
PetscErrorCode PCGAMGSetNSmooths(PC pc, PetscInt n)
Logically Collective
Input Parameters#
pc - the preconditioner context
n - the number of smooths
Options Database Key#
-pc_gamg_agg_nsmooths <nsmooth, default=1> - number of smoothing steps to use
Note#
This is a different concept from the number smoothing steps used during the linear solution process which
can be set with -mg_levels_ksp_max_it
Developer Note#
This should be named PCGAMGAGGSetNSmooths().
See Also#
the Users Manual section on PCGAMG, the Users Manual section on PCMG, KSP: Linear System Solvers, PCMG, PCGAMG
Level#
intermediate
Location#
Implementations#
PCGAMGSetNSmooths_AGG() in src/ksp/pc/impls/gamg/agg.c
Index of all PC routines
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Index of all manual pages