#include "petscksp.h" PetscErrorCode MatSchurComplementUpdateSubMatrices(Mat S,Mat A00,Mat Ap00,Mat A01,Mat A10,Mat A11)Collective on Mat Many br
S | - matrix obtained with MatCreateSchurComplement() (or equivalent) and implementing the action of A11 - A10 ksp(A00,Ap00) A01 Many br | |
A00,A01,A10,A11 | - the four parts of A = [A00 A01; A10 A11] (A11 is optional) Many br | |
Ap00 | - preconditioning matrix for use in ksp(A00,Ap00) to approximate the action of A^{-1}. Many br |
Many br
Notes: All four matrices must have the same MPI communicator Many br
A00 and A11 must be square matrices Many br
All of the matrices provided must have the same sizes as was used with MatCreateSchurComplement() or MatSchurComplementSetSubMatrices() Many brthough they need not be the same matrices. Many br
Level:intermediate
Location:src/ksp/ksp/utils/schurm.c
Index of all KSP routines
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