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