petsc-3.3-p7 2013-05-11

PCMGSetX

Sets the vector space to be used to store the solution on a particular level.

#include "petscksp.h" 
#include "petscpcmg.h"   
PetscErrorCode  PCMGSetX(PC pc,PetscInt l,Vec c)

Logically Collective on PC and Vec

	pc	- the multigrid context
	l	- the level (0 is coarsest) this is to be used for (do not supply the finest level)
	c	- the space

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.

MG, multigrid, set, solution, level