petsc-3.12.5 2020-03-29
MatCoarsenApply
Gets a coarsen for a matrix.
Synopsis
#include "petscmatcoarsen.h"
PetscErrorCode MatCoarsenApply(MatCoarsen coarser)
Collective on MatCoarsen
Input Parameter
coarsen -the coarsen
Options Database Keys
To specify the coarsen through the options database, use one of
the following
-mat_coarsen_type mis
To see the coarsen result
-mat_coarsen_view
Notes
Use MatCoarsenGetData() to access the results of the coarsening
The user can define additional coarsens; see MatCoarsenRegister().
See Also
MatCoarsenRegister(), MatCoarsenCreate(),
MatCoarsenDestroy(), MatCoarsenSetAdjacency(), ISCoarsenToNumbering(),
ISCoarsenCount(), MatCoarsenGetData()
Level
advanced
Location
src/mat/coarsen/coarsen.c
Implementations
MatCoarsenApply_HEM in src/mat/coarsen/impls/hem/hem.c
MatCoarsenApply_MIS in src/mat/coarsen/impls/mis/mis.c
Index of all MatOrderings routines
Table of Contents for all manual pages
Index of all manual pages