petsc-3.10.2 2018-10-09
Report Typos and Errors

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().

Keywords

matrix, get, coarsen

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