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#

KSP: Linear System Solvers, PCMG, PCMGSetRestriction()

Level#

advanced

Location#

src/ksp/pc/impls/mg/mgfunc.c

Examples#

src/ksp/ksp/tutorials/ex36.cxx
src/dm/impls/stag/tutorials/ex4.c
src/ksp/ksp/tutorials/ex35.cxx
src/ksp/ksp/tutorials/ex42.c


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