1Mat Object: 3 MPI processes 2 type: mpiaij 3row 0: (0, 1.) 4row 1: (0, 0.5) (1, 0.5) 5row 2: (1, 1.) 6row 3: (1, 0.5) (2, 0.5) 7row 4: (2, 1.) 8row 5: (2, 0.5) (3, 0.5) 9row 6: (3, 1.) 10row 7: (3, 0.5) (4, 0.5) 11row 8: (4, 1.) 12