1Mat Object: 2 MPI processes 2 type: nest 3 MatNest, rows=2, cols=2, structure: 4 (0,0) : NULL 5 (0,1) : type=diagonal, rows=6, cols=6 6 (1,0) : type=constantdiagonal, rows=6, cols=6 7 (1,1) : NULL 8Mat Object: 2 MPI processes 9 type: nest 10 MatNest, rows=2, cols=2, structure: 11 (0,0) : NULL 12 (0,1) : type=diagonal, rows=6, cols=6 13 (1,0) : type=constantdiagonal, rows=6, cols=6 14 (1,1) : NULL 15