Mat Object: 3 MPI processes
  type: mpiaij
  rows=18, cols=18
  total: nonzeros=74, allocated nonzeros=74
  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 = 74
matrix information (global max):
nonzeros = 29, allocated nonzeros = 29