petsc-3.5.2 2014-09-08
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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 on PC and Mat

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.

Keywords

multigrid, set, interpolate, level

See Also

PCMGSetRestriction()

Level:advanced
Location:
src/ksp/pc/impls/mg/mgfunc.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