============== test_vec_ops ==============
a = [c d] 
Vec Object: 1 MPI process
  type: nest
  VecNest, rows=2, structure: 
  (0) : type=mpi, rows=4 
    Vec Object: 1 MPI process
      type: mpi
    Process [0]
    1.
    1.
    1.
    1.
  (1) : type=mpi, rows=4 
    Vec Object: 1 MPI process
      type: mpi
    Process [0]
    2.
    2.
    2.
    2.
a = [d c] 
Vec Object: 1 MPI process
  type: nest
  VecNest, rows=2, structure: 
  (0) : type=mpi, rows=4 
    Vec Object: 1 MPI process
      type: mpi
    Process [0]
    2.
    2.
    2.
    2.
  (1) : type=mpi, rows=4 
    Vec Object: 1 MPI process
      type: mpi
    Process [0]
    1.
    1.
    1.
    1.
b = [e f] 
Vec Object: 1 MPI process
  type: nest
  VecNest, rows=2, structure: 
  (0) : type=mpi, rows=4 
    Vec Object: 1 MPI process
      type: mpi
    Process [0]
    3.
    3.
    3.
    3.
  (1) : type=mpi, rows=4 
    Vec Object: 1 MPI process
      type: mpi
    Process [0]
    4.
    4.
    4.
    4.
b = [f e] 
Vec Object: 1 MPI process
  type: nest
  VecNest, rows=2, structure: 
  (0) : type=mpi, rows=4 
    Vec Object: 1 MPI process
      type: mpi
    Process [0]
    4.
    4.
    4.
    4.
  (1) : type=mpi, rows=4 
    Vec Object: 1 MPI process
      type: mpi
    Process [0]
    3.
    3.
    3.
    3.
X = [a b] 
Vec Object: 1 MPI process
  type: nest
  VecNest, rows=2, structure: 
  (0) : type=nest, rows=8 
    Vec Object: 1 MPI process
      type: nest
      VecNest, rows=2, structure: 
      (0) : type=mpi, rows=4 
        Vec Object: 1 MPI process
          type: mpi
        Process [0]
        2.
        2.
        2.
        2.
      (1) : type=mpi, rows=4 
        Vec Object: 1 MPI process
          type: mpi
        Process [0]
        1.
        1.
        1.
        1.
  (1) : type=nest, rows=8 
    Vec Object: 1 MPI process
      type: nest
      VecNest, rows=2, structure: 
      (0) : type=mpi, rows=4 
        Vec Object: 1 MPI process
          type: mpi
        Process [0]
        4.
        4.
        4.
        4.
      (1) : type=mpi, rows=4 
        Vec Object: 1 MPI process
          type: mpi
        Process [0]
        3.
        3.
        3.
        3.
X.X = 120. 
X = [b a] 
Vec Object: 1 MPI process
  type: nest
  VecNest, rows=2, structure: 
  (0) : type=nest, rows=8 
    Vec Object: 1 MPI process
      type: nest
      VecNest, rows=2, structure: 
      (0) : type=mpi, rows=4 
        Vec Object: 1 MPI process
          type: mpi
        Process [0]
        4.
        4.
        4.
        4.
      (1) : type=mpi, rows=4 
        Vec Object: 1 MPI process
          type: mpi
        Process [0]
        3.
        3.
        3.
        3.
  (1) : type=nest, rows=8 
    Vec Object: 1 MPI process
      type: nest
      VecNest, rows=2, structure: 
      (0) : type=mpi, rows=4 
        Vec Object: 1 MPI process
          type: mpi
        Process [0]
        2.
        2.
        2.
        2.
      (1) : type=mpi, rows=4 
        Vec Object: 1 MPI process
          type: mpi
        Process [0]
        1.
        1.
        1.
        1.
X.X = 120. 
X = [g h] 
Vec Object: 1 MPI process
  type: nest
  VecNest, rows=2, structure: 
  (0) : type=mpi, rows=8 
    Vec Object: 1 MPI process
      type: mpi
    Process [0]
    6.
    6.
    6.
    6.
    6.
    6.
    6.
    6.
  (1) : type=mpi, rows=6 
    Vec Object: 1 MPI process
      type: mpi
    Process [0]
    5.
    5.
    5.
    5.
    5.
    5.
X.X = 438. 
Y = X 
Vec Object: 1 MPI process
  type: nest
  VecNest, rows=2, structure: 
  (0) : type=mpi, rows=8 
    Vec Object: 1 MPI process
      type: mpi
    Process [0]
    6.
    6.
    6.
    6.
    6.
    6.
    6.
    6.
  (1) : type=mpi, rows=6 
    Vec Object: 1 MPI process
      type: mpi
    Process [0]
    5.
    5.
    5.
    5.
    5.
    5.
Y.Y = 438. 
Y = [a b] 
Vec Object: 1 MPI process
  type: nest
  VecNest, rows=2, structure: 
  (0) : type=nest, rows=8 
    Vec Object: 1 MPI process
      type: nest
      VecNest, rows=2, structure: 
      (0) : type=mpi, rows=4 
        Vec Object: 1 MPI process
          type: mpi
        Process [0]
        2.
        2.
        2.
        2.
      (1) : type=mpi, rows=4 
        Vec Object: 1 MPI process
          type: mpi
        Process [0]
        1.
        1.
        1.
        1.
  (1) : type=nest, rows=8 
    Vec Object: 1 MPI process
      type: nest
      VecNest, rows=2, structure: 
      (0) : type=mpi, rows=4 
        Vec Object: 1 MPI process
          type: mpi
        Process [0]
        4.
        4.
        4.
        4.
      (1) : type=mpi, rows=4 
        Vec Object: 1 MPI process
          type: mpi
        Process [0]
        3.
        3.
        3.
        3.