MatCoarsenApply

Gets a coarsen for a matrix.

Synopsis

#include "petscmat.h" 
PetscErrorCode MatCoarsenApply(MatCoarsen coarser)

Collective

Input Parameter

• coarser - the coarsen

Options Database Keys

• -mat_coarsen_type mis|hem|misk - mis: maximal independent set based; misk: distance k MIS; hem: heavy edge matching

• -mat_coarsen_view - view the coarsening object

Notes

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

Use MatCoarsenGetData() to access the results of the coarsening

The user can define additional coarsens; see MatCoarsenRegister().

See Also

MatCoarsen, MatCoarsenSetFromOptions(), MatCoarsenSetType(), MatCoarsenRegister(), MatCoarsenCreate(), MatCoarsenDestroy(), MatCoarsenSetAdjacency() MatCoarsenGetData()

Level

advanced

Location

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

Implementations

MatCoarsenApply_HEM() in src/mat/graphops/coarsen/impls/hem/hem.c
MatCoarsenApply_MIS() in src/mat/graphops/coarsen/impls/mis/mis.c
MatCoarsenApply_MISK() in src/mat/graphops/coarsen/impls/misk/misk.c

---

Index of all MatGraphOperations routines
Table of Contents for all manual pages
Index of all manual pages