DM Object: ex64_plex 2 MPI processes
  type: plex
ex64_plex in 3 dimensions:
  Number of 0-cells per rank: 125 0
  Number of 1-cells per rank: 300 0
  Number of 2-cells per rank: 240 0
  Number of 3-cells per rank: 64 0
Labels:
  celltype: 4 strata with value/size (0 (125), 1 (300), 4 (240), 7 (64))
  depth: 4 strata with value/size (0 (125), 1 (300), 2 (240), 3 (64))
  Cell Sets: 4 strata with value/size (1 (16), 2 (16), 5 (16), 20 (16))
DM Object: Parallel Mesh 2 MPI processes
  type: plex
Parallel Mesh in 3 dimensions:
  Number of 0-cells per rank: 75 75
  Number of 1-cells per rank: 170 170
  Number of 2-cells per rank: 128 128
  Number of 3-cells per rank: 32 32
Labels:
  depth: 4 strata with value/size (0 (75), 1 (170), 2 (128), 3 (32))
  celltype: 4 strata with value/size (0 (75), 1 (170), 4 (128), 7 (32))
  Cell Sets: 2 strata with value/size (1 (16), 2 (16))
Field U:
  adjacency FEM
Field Sigma:
  adjacency FEM
Field Alpha:
  adjacency FEM