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_MATRIX or MAT_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

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