petsc-3.3-p7 2013-05-11
MatCoarsenApply
Gets a coarsen for a matrix.
Synopsis
#include "petscmat.h"
PetscErrorCode MatCoarsenApply( MatCoarsen coarser )
Collective on Mat
Input Parameters
matp -the matrix coarsen object
Output Parameters
coarsen -the coarsen. For each local node this tells the aggregate
number that that node is assigned to.
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
The user can define additional coarsens; see MatCoarsenRegisterDynamic().
Keywords
matrix, get, coarsen
See Also
MatCoarsenRegisterDynamic(), MatCoarsenCreate(),
MatCoarsenDestroy(), MatCoarsenSetAdjacency(), ISCoarsenToNumbering(),
ISCoarsenCount()
Level:beginner
Location:src/mat/coarsen/coarsen.c
Index of all MatOrderings routines
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