LAMMPS (7 Jan 2012)
  using 4 OpenMP thread(s) per MPI task
package gpu force 0 0 1
variable	x index 1
variable	y index 1
variable	z index 1

variable	xx equal 10*$x
variable	xx equal 10*1
variable	yy equal 10*$y
variable	yy equal 10*1
variable	zz equal 10*$z
variable	zz equal 10*1

units		lj
atom_style	atomic
newton      off
lattice		fcc 0.8442
Lattice spacing in x,y,z = 1.6796 1.6796 1.6796
region		box block 0 ${xx} 0 ${yy} 0 ${zz}
region		box block 0 10 0 ${yy} 0 ${zz}
region		box block 0 10 0 10 0 ${zz}
region		box block 0 10 0 10 0 10
create_box	1 box
Created orthogonal box = (0 0 0) to (16.796 16.796 16.796)
  1 by 1 by 3 MPI processor grid
create_atoms	1 box
Created 4000 atoms
mass		1 1.0

velocity	all create 1.44 87287 loop geom

pair_style  lj/class2 2.5
pair_coeff	1 1 1.0 1.0 2.5

neighbor	0.3 bin
neigh_modify	delay 0 every 20 check no

fix		1 all nve

timestep 0.003
thermo   100
run		400
Memory usage per processor = 2.87821 Mbytes
Step Temp E_pair E_mol TotEng Press 
       0         1.44   -4.7399617            0   -2.5805017    -4.550211 
     100    1.1286577   -4.2758191            0   -2.5832557  -0.04474422 
     200    1.1581789   -4.3192774            0   -2.5824434  -0.13340207 
     300    1.1653958   -4.3309774            0   -2.5833206  -0.12270465 
     400    1.1564998   -4.3178433            0   -2.5835272 -0.083895089 
Loop time of 0.886729 on 12 procs (3 MPI x 4 OpenMP) for 400 steps with 4000 atoms

Pair  time (%) = 0.726795 (81.9636)
Neigh time (%) = 0.115138 (12.9846)
Comm  time (%) = 0.0338599 (3.81852)
Outpt time (%) = 0.000642379 (0.0724437)
Other time (%) = 0.0102931 (1.16079)

Nlocal:    1333.33 ave 1356 max 1319 min
Histogram: 1 1 0 0 0 0 0 0 0 1
Nghost:    3417.33 ave 3456 max 3360 min
Histogram: 1 0 0 0 0 0 0 1 0 1
Neighs:    66251.7 ave 67479 max 65247 min
Histogram: 1 0 0 1 0 0 0 0 0 1

Total # of neighbors = 198755
Ave neighs/atom = 49.6887
Neighbor list builds = 20
Dangerous builds = 0