PCHMGSetUseSubspaceCoarsening

Use subspace coarsening in PCHMG

Synopsis

#include "petscpc.h" 
PetscErrorCode PCHMGSetUseSubspaceCoarsening(PC pc, PetscBool subspace)

Logically Collective

Input Parameters

• pc - the PCHMG context

• subspace - PETSC_TRUE indicates that PCHMG will use the subspace coarsening

Options Database Key

• -pc_hmg_use_subspace_coarsening <true | false> - Whether or not to use subspace coarsening (that is, coarsen a submatrix).

See Also

KSP: Linear System Solvers, PCHMG, PCHMGSetReuseInterpolation(), PCHMGSetCoarseningComponent(), PCHMGSetInnerPCType()

Level

beginner

Location

src/ksp/pc/impls/hmg/hmg.c

Examples

src/ksp/ksp/tutorials/ex4.c

Implementations

PCHMGSetUseSubspaceCoarsening_HMG() in src/ksp/pc/impls/hmg/hmg.c

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