petsc-3.7.3 2016-08-01
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PCGAMGSetThreshold

 Relative threshold to use for dropping edges in aggregation graph

Synopsis

#include "petscpc.h" 
PetscErrorCode PCGAMGSetThreshold(PC pc, PetscReal n)
Not collective on PC

Input Parameters

pc - the preconditioner context
threshold - the threshold value, 0.0 means keep all nonzero entries in the graph; negative means keep even zero entries in the graph

Options Database Key

-pc_gamg_threshold <threshold> -

See Also

()

Level:intermediate
Location:src/ksp/pc/impls/gamg/gamg.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages