PCGAMGGetProlongatorFilter#
Get threshold for filtering small entries from the prolongator
Synopsis#
#include "petscpc.h"
PetscErrorCode PCGAMGGetProlongatorFilter(PC pc, PetscReal *thr)
Not Collective
Input Parameter#
pc - the preconditioner context
Output Parameter#
thr - threshold value; entries with absolute value below this are dropped (0 disables filtering)
See Also#
the Users Manual section on PCGAMG, the Users Manual section on PCMG, KSP: Linear System Solvers, PCGAMG, PCGAMGSetProlongatorFilter(), PCGAMGSetLowMemoryFilter()
Level#
intermediate
Location#
Implementations#
PCGAMGGetProlongatorFilter_AGG() in src/ksp/pc/impls/gamg/agg.c
Index of all PC routines
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Index of all manual pages