PCGAMGSetNSmooths#

Set number of smoothing steps (1 is typical) used for multigrid on all the levels

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 with smooth aggregation

See Also#

KSP: Linear System Solvers, PCMG, PCGAMG

Level#

intermediate

Location#

src/ksp/pc/impls/gamg/agg.c

Implementations#

PCGAMGSetNSmooths_AGG() in src/ksp/pc/impls/gamg/agg.c

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Index of all manual pages