LAMMPS (10 Jan 2012)
# LAMMPS benchmark of granular flow
# chute flow of 32000 atoms with frozen base at 26 degrees

units		lj
atom_style	sphere
boundary	p p fs
newton		off
communicate	single vel yes

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

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
912 atoms in group bottom
group		active subtract all bottom
31088 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
Memory usage per processor = 15.2765 Mbytes
Step Atoms KinEng 1 Volume 
       0    32000    784139.13    1601.1263     29830.88 
     100    32000    784289.99    1571.0137    29831.804 
Loop time of 0.146905 on 4 procs for 100 steps with 32000 atoms

Pair  time (%) = 0.0729731 (49.6735)
Neigh time (%) = 0.0111947 (7.62035)
Comm  time (%) = 0.0153095 (10.4213)
Outpt time (%) = 0.000119746 (0.0815122)
Other time (%) = 0.0473083 (32.2033)

Nlocal:    8000 ave 8010 max 7990 min
Histogram: 2 0 0 0 0 0 0 0 0 2
Nghost:    2439 ave 2452 max 2426 min
Histogram: 2 0 0 0 0 0 0 0 0 2
Neighs:    29503.5 ave 30500 max 28507 min
Histogram: 2 0 0 0 0 0 0 0 0 2

Total # of neighbors = 118014
Ave neighs/atom = 3.68794
Neighbor list builds = 2
Dangerous builds = 0