PCMGSetInterpolation#
Sets the function to be used to calculate the interpolation from l-1 to the lth level
Synopsis#
#include "petscksp.h"
PetscErrorCode PCMGSetInterpolation(PC pc, PetscInt l, Mat mat)
Logically Collective
Input Parameters#
pc - the multigrid context
mat - the interpolation operator
l - the level (0 is coarsest) to supply [do not supply 0]
Notes#
Usually this is the same matrix used also to set the restriction for the same level.
One can pass in the interpolation matrix or its transpose; PETSc figures out from the matrix size which one it is.
See Also#
Level#
advanced
Location#
Examples#
src/ksp/ksp/tutorials/ex42.c
src/ksp/ksp/tutorials/ex36.cxx
src/ksp/ksp/tutorials/ex35.cxx
src/dm/impls/stag/tutorials/ex4.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages