DM Object: 1 MPI process
  type: da
Processor [0] M 8 N 8 P 8 m 1 n 1 p 1 w 2 s 1
X range of indices: 0 8, Y range of indices: 0 8, Z range of indices: 0 8
Lower left corner 0. 0. 0. : Upper right 1. 1. 1.
min: (0., 0., 0.) max: (1., 1., 1.)
DM Object: ions (pic_) 1 MPI process
  type: swarm
ions in 3 dimensions:
  Number of particles per rank: 64