petsc-master 2019-09-22
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PCGAMGSetReuseInterpolation

Reuse prolongation when rebuilding algebraic multigrid preconditioner

Synopsis

#include "petscpc.h" 
PetscErrorCode PCGAMGSetReuseInterpolation(PC pc, PetscBool n)
Collective on PC

Input Parameters

pc - the preconditioner context
n - PETSC_TRUE or PETSC_FALSE

Options Database Key

-pc_gamg_reuse_interpolation <true,false> -

Notes

this may negatively affect the convergence rate of the method on new matrices if the matrix entries change a great deal, but allows rebuilding the preconditioner quicker.

See Also

()

Level

intermediate

Location

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

Implementations

PCGAMGSetReuseInterpolation_GAMG in src/ksp/pc/impls/gamg/gamg.c

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Index of all manual pages