petsc-3.9.0 2018-04-07
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PCGAMGSetSymGraph

Symmetrize the graph before computing the aggregation. Some algorithms require the graph be symmetric

Synopsis

#include "petscpc.h" 
PetscErrorCode PCGAMGSetSymGraph(PC pc, PetscBool n)
Not Collective on PC

Input Parameters

Options Database Key

See Also

PCGAMGSetSquareGraph()

Level

intermediate

Location

src/ksp/pc/impls/gamg/agg.c

Implementations

PCGAMGSetSymGraph_AGG in src/ksp/pc/impls/gamg/agg.c

Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages
pc - the preconditioner context
n - PETSC_TRUE or PETSC_FALSE
-pc_gamg_sym_graph <true,default=false> - symmetrize the graph before computing the aggregation