Mesh confirmed to be single topology degree 3 hexahedron
DM Object: ex16_plex (loaded_) 4 MPI processes
  type: plex
ex16_plex in 3 dimensions:
  Number of 0-cells per rank: 12 12 12 12
  Number of 1-cells per rank: 20 20 20 20
  Number of 2-cells per rank: 11 11 11 11
  Number of 3-cells per rank: 2 2 2 2
Labels:
  depth: 4 strata with value/size (0 (12), 1 (20), 2 (11), 3 (2))
  celltype: 4 strata with value/size (0 (12), 1 (20), 4 (11), 7 (2))
  Face Sets: 4 strata with value/size (1 (2), 3 (2), 5 (1), 6 (1))
Field FE for VecLoad:
  adjacency FEM
Solution Name: FlowSolution0, and time 0.