PCGAMGSetCpuPinCoarseGrids

pin the coarse grids created in PCGAMG to run only on the CPU since the problems may be too small to run efficiently on the GPUs

Synopsis

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

Collective

Input Parameters

• pc - the preconditioner context

• flg - PETSC_TRUE to pin coarse grids to the CPU

Options Database Key

• -pc_gamg_cpu_pin_coarse_grids - pin the coarse grids to the CPU

See Also

the Users Manual section on PCGAMG, the Users Manual section on PCMG, KSP: Linear System Solvers, PCGAMG, PCGAMGSetCoarseGridLayoutType(), PCGAMGSetParallelCoarseGridSolve()

Level

intermediate

Location

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

Implementations

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

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