MatCoarsenSetStrengthIndex#

Index array to use for index to use for strength of connection

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatCoarsenSetStrengthIndex(MatCoarsen coarse, PetscInt n, PetscInt idx[])

Logically Collective

Input Parameters#

  • coarse - the coarsen context

  • n - number of indices

  • idx - array of indices

Options Database Key#

  • -mat_coarsen_strength_index - array of subset of variables per vertex to use for strength norm, -1 for using all (default)

Note#

When the coarsening is used inside PCGAMG then the options database keys are prefixed with -pc_gamg_

See Also#

MatCoarsen, MatCoarsenType, MatCoarsenApply(), MatCoarsenCreate(), MatCoarsenSetType()

Level#

intermediate

Location#

src/mat/graphops/coarsen/interface/coarsen.c


Index of all MatGraphOperations routines
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Index of all manual pages