Original matrix
Mat Object: 1 MPI processes
  type: seqdense
0.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 1.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 
0.0000000000000000e+00 0.0000000000000000e+00 2.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 
0.0000000000000000e+00 3.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 4.0000000000000000e+00 0.0000000000000000e+00 
5.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 6.0000000000000000e+00 
0.0000000000000000e+00 7.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 8.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 
Permuted matrix
Mat Object: 1 MPI processes
  type: seqdense
0.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 7.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 8.0000000000000000e+00 
4.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 3.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 
0.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 2.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 
0.0000000000000000e+00 1.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 
0.0000000000000000e+00 0.0000000000000000e+00 6.0000000000000000e+00 0.0000000000000000e+00 0.0000000000000000e+00 5.0000000000000000e+00 0.0000000000000000e+00 
Row permutation
IS Object: 1 MPI processes
  type: general
Index set is permutation
Number of indices in set 5
0 4
1 2
2 1
3 0
4 3
Column permutation
IS Object: 1 MPI processes
  type: general
Index set is permutation
Number of indices in set 7
0 5
1 3
2 6
3 1
4 2
5 0
6 4