petsc-3.8.4 2018-03-24
Report Typos and Errors

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
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages