petsc-3.12.5 2020-03-29

PCMGSetType

Determines the form of multigrid to use: multiplicative, additive, full, or the Kaskade algorithm.

#include "petscksp.h" 
PetscErrorCode  PCMGSetType(PC pc,PCMGType form)

Logically Collective on PC

	pc	- the preconditioner context
	form	- multigrid form, one of PC_MG_MULTIPLICATIVE, PC_MG_ADDITIVE, PC_MG_FULL, PC_MG_KASKADE

-pc_mg_type <form> -Sets <form>, one of multiplicative, additive, full, kaskade

advanced