PCGAMGSetParallelCoarseGridSolve#

allow a parallel coarse grid solver

Synopsis#

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

Collective

Input Parameters#

  • pc - the preconditioner context

  • flg - PETSC_TRUE to not force coarse grid onto one processor

Options Database Key#

  • -pc_gamg_parallel_coarse_grid_solver - use a parallel coarse grid direct solver

See Also#

KSP: Linear System Solvers, PCGAMG, PCGAMGSetCoarseGridLayoutType(), PCGAMGSetCpuPinCoarseGrids()

Level#

intermediate

Location#

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

Implementations#

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

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