1PetscSF Object: 3 MPI processes 2 type not yet set 3 PetscSFSetGraph() has not been called yet 4PetscSF Object: 3 MPI processes 5 type: basic 6 sort=rank-order 7 [0] Number of roots=0, leaves=0, remote ranks=0 8 [1] Number of roots=0, leaves=0, remote ranks=0 9 [2] Number of roots=0, leaves=0, remote ranks=0 10PetscSF Object: 3 MPI processes 11 type: basic 12 sort=rank-order 13 PetscSFSetGraph() has not been called yet 14PetscSF Object: 3 MPI processes 15 type: basic 16 sort=rank-order 17 [0] Number of roots=0, leaves=0, remote ranks=0 18 [1] Number of roots=0, leaves=0, remote ranks=0 19 [2] Number of roots=0, leaves=0, remote ranks=0 20