MatCreateMPIAIJWithSeqAIJ#
creates a MATMPIAIJ
matrix using MATSEQAIJ
matrices that contain the “diagonal” and “off-diagonal” part of the matrix in CSR format.
Synopsis#
#include "petscmat.h"
PetscErrorCode MatCreateMPIAIJWithSeqAIJ(MPI_Comm comm, Mat A, Mat B, const PetscInt garray[], Mat *mat)
Collective
Input Parameters#
comm - MPI communicator
A - “diagonal” portion of matrix
B - “off-diagonal” portion of matrix, may have empty columns, will be destroyed by this routine
garray - global index of B columns
Output Parameter#
mat - the matrix, with input A as its local diagonal matrix
Notes#
See MatCreateAIJ()
for the definition of “diagonal” and “off-diagonal” portion of the matrix.
A becomes part of output mat, B is destroyed by this routine. The user cannot use A and B anymore.
See Also#
Level#
advanced
Location#
src/mat/impls/aij/mpi/mpiaij.c
Index of all Mat routines
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Index of all manual pages