PCGAMGASMSetUseAggs

Have the PCGAMG smoother on each level use the aggregates defined by the coarsening process as the subdomains for the additive Schwarz preconditioner used as the smoother

Synopsis

#include "petscpc.h" 
#include "petscksp.h" 
PetscErrorCode PCGAMGASMSetUseAggs(PC pc, PetscBool flg)

Collective

Input Parameters

• pc - the preconditioner context

• flg - PETSC_TRUE to use aggregates, PETSC_FALSE to not

Options Database Key

• -pc_gamg_asm_use_agg <true,false> - use aggregates to define the additive Schwarz subdomains

See Also

KSP: Linear System Solvers, PCGAMG, PCASM, PCSetType

Level

intermediate

Location

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

Implementations

PCGAMGASMSetUseAggs_GAMG() in src/ksp/pc/impls/gamg/gamg.c

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