Mat Object: 2 MPI processes
row 0:
row 1:
row 2:
row 3: (3, 22.) 
row 4: (7, 22.) 
row 5:
row 6:
row 7: (4, 22.)  (9, 22.) 
row 8:
row 9: (7, 22.) 
Mat Object: 2 MPI processes
row 0:
row 1:
row 2:
row 3: (3, 0.3) 
row 4: (7, 3.3) 
row 5:
row 6:
row 7: (4, 3.3)  (9, 4.3) 
row 8:
row 9: (7, 4.3)