petsc-3.9.4 2018-09-11
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PCGAMGSetSquareGraph

 Square the graph, ie. compute A'*A before aggregating it

Synopsis

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

Input Parameters

pc - the preconditioner context
n - PETSC_TRUE or PETSC_FALSE

Options Database Key

-pc_gamg_square_graph <n,default = 1> -number of levels to square the graph on before aggregating it

See Also

PCGAMGSetSymGraph()

Level

intermediate

Location

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

Implementations

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

Index of all PC routines
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Index of all manual pages