PCGAMGGetProlongatorFilterScale#

Get the per-level scaling of the prolongator filter threshold

Synopsis#

#include "petscpc.h" 
PetscErrorCode PCGAMGGetProlongatorFilterScale(PC pc, PetscReal *scale)

Not Collective

Input Parameter#

pc - the preconditioner context

Output Parameter#

scale - per-level multiplier in [0,1]; the effective threshold on level l is prolongator_filter times scale raised to the power l, where level 0 is the finest

See Also#

the Users Manual section on PCGAMG, the Users Manual section on PCMG, KSP: Linear System Solvers, PCGAMG, PCGAMGSetProlongatorFilter(), PCGAMGSetProlongatorFilterScale()

Level#

intermediate

Location#

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

Implementations#

PCGAMGGetProlongatorFilterScale_AGG() in src/ksp/pc/impls/gamg/agg.c

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Index of all manual pages