petsc-3.7.1 2016-05-15

MatCreateMPIMatConcatenateSeqMat

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

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

Collective on MPI_Comm Many br

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

mpimat -the parallel matrix generated Many br

Many br

Notes: The number of columns of the matrix in EACH processor MUST be the same. Many br