petsc-3.14.6 2021-03-30

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MatCreateMPIMatConcatenateSeqMat

Creates a single large PETSc matrix by concatenating sequential matrices from each processor

Synopsis

#include "petscmat.h" 
PetscErrorCode MatCreateMPIMatConcatenateSeqMat(MPI_Comm comm,Mat seqmat,PetscInt n,MatReuse reuse,Mat *mpimat)

Collective

Input Parameters

	comm	- the communicators the parallel matrix will live on
	seqmat	- the input sequential matrices
	n	- number of local columns (or PETSC_DECIDE)
	reuse	- either MAT_INITIAL_MATRIX or MAT_REUSE_MATRIX

Output Parameter

mpimat

- the parallel matrix generated

Notes

The number of columns of the matrix in EACH processor MUST be the same.

Level

advanced

Location

src/mat/interface/matrix.c

Implementations

MatCreateMPIMatConcatenateSeqMat_MPIAIJ in src/mat/impls/aij/mpi/mpiaij.c
MatCreateMPIMatConcatenateSeqMat_SeqAIJ in src/mat/impls/aij/seq/aij.c
MatCreateMPIMatConcatenateSeqMat_MPIBAIJ in src/mat/impls/baij/mpi/mpibaij.c
MatCreateMPIMatConcatenateSeqMat_SeqBAIJ in src/mat/impls/baij/seq/baij.c
MatCreateMPIMatConcatenateSeqMat_MPIDense in src/mat/impls/dense/mpi/mpidense.c
MatCreateMPIMatConcatenateSeqMat_SeqDense in src/mat/impls/dense/seq/dense.c
MatCreateMPIMatConcatenateSeqMat_MPISBAIJ in src/mat/impls/sbaij/mpi/mpisbaij.c
MatCreateMPIMatConcatenateSeqMat_SeqSBAIJ in src/mat/impls/sbaij/seq/sbaij.c

Index of all Mat routines
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Index of all manual pages