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

Input Parameters

• pc - the multigrid context

• l - the level (0 is coarsest) this is to be used for

• c - the Vec

Note

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.

See Also

KSP: Linear System Solvers, PCMG, PCMGSetRhs(), PCMGSetX()

Level

advanced

Location

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

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Index of all PC routines
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Index of all manual pages