petsc-3.11.3 2019-06-26
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PCGAMGFilterGraph

filter (remove zero and possibly small values from the) graph and make it symmetric if requested

Synopsis

#include "petscpc.h" 
PetscErrorCode PCGAMGFilterGraph(Mat *a_Gmat,PetscReal vfilter,PetscBool symm)
Collective on Mat

Input Parameter

a_Gmat - the graph
vfilter - threshold paramter [0,1)
symm - make the result symmetric

Notes

This is called before graph coarsers are called.

See Also

PCGAMGSetThreshold()

Level

developer

Location

src/ksp/pc/impls/gamg/util.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages