petsc-3.3-p7 2013-05-11

PCMGSetGalerkin

 Causes the coarser grid matrices to be computed from the finest grid via the Galerkin process: A_i-1 = r_i * A_i * r_i^t

Synopsis

#include "petscpcmg.h" 
PetscErrorCode PCMGSetGalerkin(PC pc,PetscBool use)
Logically Collective on PC

Input Parameters

pc - the multigrid context
use - PETSC_TRUE to use the Galerkin process to compute coarse-level operators

Options Database Key

 -pc_mg_galerkin

Keywords

MG, set, Galerkin

See Also

PCMGGetGalerkin()

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

Examples

src/ksp/ksp/examples/tutorials/ex42.c.html