petsc-master 2014-11-21
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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 MatCoarsenRegister().

Keywords

matrix, get, coarsen

See Also

MatCoarsenRegister(), MatCoarsenCreate(),
MatCoarsenDestroy(), MatCoarsenSetAdjacency(), ISCoarsenToNumbering(), ISCoarsenCount()

Level:beginner
Location:
src/mat/coarsen/coarsen.c
Index of all MatOrderings routines
Table of Contents for all manual pages
Index of all manual pages