| mat | - the matrix
|
| 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)
|
| Ii | - row indices; that is Ii[0] = 0, Ii[row] = Ii[row-1] + number of elements in that row of the matrix
|
| J | - column indices
|
| v | - matrix values
|