Mat Object: 3 MPI processes
  type: mpiaij
  rows=18, cols=18
  total: nonzeros=74, allocated nonzeros=180
  total number of mallocs used during MatSetValues calls =0
    not using I-node (on process 0) routines
matrix information (global sums):
     nonzeros = 74, allocated nonzeros = 180
matrix information (global max):
     nonzeros = 29, allocated nonzeros = 60
