LAMMPS (6 Oct 2016)
# LAMMPS benchmark of granular flow
# chute flow of 32000 atoms with frozen base at 26 degrees

variable	x index 1
variable	y index 1

units		lj
atom_style	sphere
boundary	p p fs
newton		off
comm_modify	vel yes

read_data	data.chute
  orthogonal box = (0 0 0) to (40 20 37.2886)
  2 by 1 by 2 MPI processor grid
  reading atoms ...
  32000 atoms
  reading velocities ...
  32000 velocities

replicate	$x $y 1
replicate	2 $y 1
replicate	2 2 1
  orthogonal box = (0 0 0) to (80 40 37.2922)
  2 by 2 by 1 MPI processor grid
  128000 atoms

pair_style	gran/hooke/history 200000.0 NULL 50.0 NULL 0.5 0
pair_coeff	* *

neighbor	0.1 bin
neigh_modify	every 1 delay 0

timestep	0.0001

group		bottom type 2
3648 atoms in group bottom
group		active subtract all bottom
124352 atoms in group active
neigh_modify	exclude group bottom bottom

fix		1 all gravity 1.0 chute 26.0
fix		2 bottom freeze
fix		3 active nve/sphere

compute		1 all erotate/sphere
thermo_style	custom step atoms ke c_1 vol
thermo_modify	norm no
thermo		100

run		100
Neighbor list info ...
  2 neighbor list requests
  update every 1 steps, delay 0 steps, check yes
  max neighbors/atom: 2000, page size: 100000
  master list distance cutoff = 1.1
  ghost atom cutoff = 1.1
  binsize = 0.55 -> bins = 146 73 68
Memory usage per processor = 16.1265 Mbytes
Step Atoms KinEng c_1 Volume 
       0   128000    3136556.5    6404.5051    119335.13 
     100   128000    3137168.3    6284.3873    119338.83 
Loop time of 0.832365 on 4 procs for 100 steps with 128000 atoms

Performance: 1038.006 tau/day, 120.140 timesteps/s
99.8% CPU use with 4 MPI tasks x no OpenMP threads

MPI task timing breakdown:
Section |  min time  |  avg time  |  max time  |%varavg| %total
---------------------------------------------------------------
Pair    | 0.5178     | 0.52208    | 0.52793    |   0.5 | 62.72
Neigh   | 0.047003   | 0.047113   | 0.047224   |   0.0 |  5.66
Comm    | 0.05233    | 0.052988   | 0.053722   |   0.2 |  6.37
Output  | 0.00024986 | 0.00032717 | 0.00036693 |   0.3 |  0.04
Modify  | 0.15517    | 0.15627    | 0.15808    |   0.3 | 18.77
Other   |            | 0.0536     |            |       |  6.44

Nlocal:    32000 ave 32000 max 32000 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Nghost:    5463 ave 5463 max 5463 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Neighs:    115133 ave 115133 max 115133 min
Histogram: 4 0 0 0 0 0 0 0 0 0

Total # of neighbors = 460532
Ave neighs/atom = 3.59791
Neighbor list builds = 2
Dangerous builds = 0
Total wall time: 0:00:00
