petsc-3.14.6 2021-03-30
PCMGSetR
Sets the vector to be used to store the residual on a particular level.
Synopsis
#include "petscksp.h"
PetscErrorCode PCMGSetR(PC pc,PetscInt l,Vec c)
Logically Collective on PC
Input Parameters
| pc | - the multigrid context
|
| l | - the level (0 is coarsest) this is to be used for
|
| c | - the Vec
|
Notes
If this is not provided PETSc will automatically generate one. You do not need to keep a reference to this vector if you do not need it. PCDestroy() will properly free it.
Keywords
MG, multigrid, set, residual, level
See Also
PCMGSetRhs(), PCMGSetX()
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