1Creating a 3-dimensional structured regular mesh of 2x2x2 in memory and creating a DM object. 2Generate the MOAB mesh hierarchy with 2 levels. 3Level 0 4DM Object: Coarse Mesh 1 MPI process 5 type: moab 6 Coarse Mesh in 3 dimensions: 7 Sizes: cells=8, vertices=27, blocks=1 8 Boundary trace: 9 cells=8, faces=24, vertices=26 10 Fields: 1 components 11 [0] - DEFAULT 12Level 1 13DM Object: 1 MPI process 14 type: moab 15 Sizes: cells=64, vertices=125, blocks=1 16 Boundary trace: 17 cells=56, faces=96, vertices=75 18 Fields: 1 components 19 [0] - DEFAULT 20Level 2 21DM Object: 1 MPI process 22 type: moab 23 Sizes: cells=512, vertices=729, blocks=1 24 Boundary trace: 25 cells=296, faces=384, vertices=263 26 Fields: 1 components 27 [0] - DEFAULT 28