PetscSF Object: 3 MPI processes
  type: basic
  [0] Number of roots=3, leaves=3, remote ranks=3
  [0] 0 <- (0,0)
  [0] 1 <- (1,0)
  [0] 2 <- (2,0)
  [1] Number of roots=3, leaves=3, remote ranks=3
  [1] 0 <- (0,1)
  [1] 1 <- (1,1)
  [1] 2 <- (2,1)
  [2] Number of roots=3, leaves=3, remote ranks=3
  [2] 0 <- (0,2)
  [2] 1 <- (1,2)
  [2] 2 <- (2,2)
  [0] Roots referenced by my leaves, by rank
  [0] 0: 1 edges
  [0]    0 <- 0
  [0] 1: 1 edges
  [0]    1 <- 0
  [0] 2: 1 edges
  [0]    2 <- 0
  [1] Roots referenced by my leaves, by rank
  [1] 0: 1 edges
  [1]    0 <- 1
  [1] 1: 1 edges
  [1]    1 <- 1
  [1] 2: 1 edges
  [1]    2 <- 1
  [2] Roots referenced by my leaves, by rank
  [2] 0: 1 edges
  [2]    0 <- 2
  [2] 1: 1 edges
  [2]    1 <- 2
  [2] 2: 1 edges
  [2]    2 <- 2
  MultiSF sort=rank-order
## Bcast Rootdata
[0] 0: 100 101 102
[1] 0: 200 201 202
[2] 0: 300 301 302
## Bcast Leafdata
[0] 0: 100 200 300
[1] 0: 101 201 301
[2] 0: 102 202 302