petsc-3.10.2 2018-10-09
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MatCreateMPIAIJWithSeqAIJ

creates a MPIAIJ matrix using SeqAIJ 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 on MPI_Comm

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

MatCreateMPIAIJWithSplitArrays()

Level

advanced

Location

src/mat/impls/aij/mpi/mpiaij.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages