petsc-3.7.5 2017-01-01

PCPARMSSetFill

Sets the fill-in parameters for ILUT, ILUK and ARMS preconditioners. Consider the original matrix A = [B F; E C] and the approximate version M = [LB 0; E/UB I]*[UB LB\F; 0 S].

Synopsis

#include "petscpc.h" 
PetscErrorCode PCPARMSSetFill(PC pc,PetscInt lfil0,PetscInt lfil1,PetscInt lfil2)

Collective on PC

Input Parameters

	pc	- the preconditioner context
	fil0	- the level of fill-in kept in LB, UB, E/UB and LB\F
	fil1	- the level of fill-in kept in S
	fil2	- the level of fill-in kept in the L and U parts of the LU factorization of S

Options Database Keys

	-pc_parms_lfil_ilu_arms	- set the amount of fill-in for ilut, iluk and arms
	-pc_parms_lfil_schur	- set the amount of fill-in for schur
	-pc_parms_lfil_ilut_L_U	- set the amount of fill-in for ILUT L and U

Notes

See the pARMS function parms_PCSetFill for more information.

PCPARMSSetFill

Synopsis

Input Parameters

Options Database Keys

Notes

See Also