MatCreateMPIAIJSumSeqAIJ#
Creates a MATMPIAIJ matrix by adding sequential matrices from each processor
Synopsis#
#include "petscmat.h"
PetscErrorCode MatCreateMPIAIJSumSeqAIJ(MPI_Comm comm, Mat seqmat, PetscInt m, PetscInt n, MatReuse scall, Mat *mpimat)
Collective
Input Parameters#
comm - the communicators the parallel matrix will live on
seqmat - the input sequential matrices
m - number of local rows (or
PETSC_DECIDE)n - number of local columns (or
PETSC_DECIDE)scall - either
MAT_INITIAL_MATRIXorMAT_REUSE_MATRIX
Output Parameter#
mpimat - the parallel matrix generated
Note#
The dimensions of the sequential matrix in each processor MUST be the same.
The input seqmat is included into the container “Mat_Merge_SeqsToMPI”, and will be
destroyed when mpimat is destroyed. Call PetscObjectQuery() to access seqmat.
See Also#
Matrices, Mat, MatCreateAIJ()
Level#
advanced
Location#
src/mat/impls/aij/mpi/mpiaij.c
Index of all Mat routines
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Index of all manual pages