petsc-3.12.2 2019-11-22
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SNESFASSetInterpolation

Sets the function to be used to calculate the interpolation from l-1 to the lth level

Synopsis

#include "petscsnes.h"  
PetscErrorCode SNESFASSetInterpolation(SNES snes, PetscInt level, Mat mat)

Input Parameters

snes - the multigrid context
mat - the interpolation operator
level - 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

SNESFASSetInjection(), SNESFASSetRestriction(), SNESFASSetRScale()

Level

advanced

Location

src/snes/impls/fas/fasfunc.c
Index of all SNESFAS routines
Table of Contents for all manual pages
Index of all manual pages