1*c4762a1bSJed BrownTotal number of fields: 3. 2*c4762a1bSJed BrownCreating a 2-dimensional structured regular mesh of 5x5x5 in memory and creating a DM object. 3*c4762a1bSJed BrownSetting field names to DM: 4*c4762a1bSJed Brown Field{0} = v1. 5*c4762a1bSJed Brown Field{1} = v2. 6*c4762a1bSJed Brown Field{2} = v3. 7*c4762a1bSJed BrownCreating a global vector defined on DM and setting random data. 8*c4762a1bSJed BrownCreating a global matrix defined on DM with the right block structure. 9