MatInvertVariableBlockDiagonal

Inverts the point block diagonal entries.

Synopsis

#include "petscmat.h" 
PetscErrorCode MatInvertVariableBlockDiagonal(Mat mat, PetscInt nblocks, const PetscInt *bsizes, PetscScalar *values)

Collective; No Fortran Support

Input Parameters

• mat - the matrix

• nblocks - the number of blocks on the process, set with MatSetVariableBlockSizes()

• bsizes - the size of each block on the process, set with MatSetVariableBlockSizes()

Output Parameter

• values - the block inverses in column major order (FORTRAN-like)

Notes

Use MatInvertBlockDiagonal() if all blocks have the same size

The blocks never overlap between two MPI ranks, use MatInvertVariableBlockEnvelope() for that case

See Also

Matrices, Mat, MatInvertBlockDiagonal(), MatSetVariableBlockSizes(), MatInvertVariableBlockEnvelope()

Level

advanced

Location

src/mat/interface/matrix.c

Implementations

MatInvertVariableBlockDiagonal_MPIAIJ in src/mat/impls/aij/mpi/mpiaij.c
MatInvertVariableBlockDiagonal_SeqAIJ in src/mat/impls/aij/seq/aij.c

---

Edit on GitLab

Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages