MatSchurComplementSetAinvType#
set the type of approximation used for the inverse of the (0,0) block used in forming Sp in MatSchurComplementGetPmat()
Synopsis#
#include "petscksp.h"
PetscErrorCode MatSchurComplementSetAinvType(Mat S, MatSchurComplementAinvType ainvtype)
Not collective.
Input Parameters#
S - matrix obtained with MatCreateSchurComplement() (or equivalent) and implementing the action of A11 - A10 ksp(A00,Ap00) A01
ainvtype - type of approximation to be used to form approximate Schur complement Sp = A11 - A10 inv(DIAGFORM(A00)) A01: MAT_SCHUR_COMPLEMENT_AINV_DIAG, MAT_SCHUR_COMPLEMENT_AINV_LUMP, MAT_SCHUR_COMPLEMENT_AINV_BLOCK_DIAG, or MAT_SCHUR_COMPLEMENT_AINV_FULL
Options database#
-mat_schur_complement_ainv_type diag | lump | blockdiag | full
See Also#
MatSchurComplementAinvType
, MatCreateSchurComplement()
, MatGetSchurComplement()
, MatSchurComplementGetPmat()
, MatSchurComplementGetAinvType()
Level#
advanced
Location#
src/ksp/ksp/utils/schurm/schurm.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages