#include "petscmat.h" PetscErrorCode MatCreateMPISBAIJWithArrays(MPI_Comm comm,PetscInt bs,PetscInt m,PetscInt n,PetscInt M,PetscInt N,const PetscInt i[],const PetscInt j[],const PetscScalar a[],Mat *mat)Collective
| comm | - MPI communicator | |
| bs | - the block size, only a block size of 1 is supported | |
| m | - number of local rows (Cannot be PETSC_DECIDE) | |
| n | - This value should be the same as the local size used in creating the x vector for the matrix-vector product y = Ax. (or PETSC_DECIDE to have calculated if N is given) For square matrices n is almost always m. | |
| M | - number of global rows (or PETSC_DETERMINE to have calculated if m is given) | |
| N | - number of global columns (or PETSC_DETERMINE to have calculated if n is given) | |
| i | - row indices; that is i[0] = 0, i[row] = i[row-1] + number of block elements in that row block row of the matrix | |
| j | - column indices | |
| a | - matrix values |
The i and j indices are 0 based, and i indices are indices corresponding to the local j array.