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lammps/bench/log.28Jan14.chute.scaled.linux.4
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LAMMPS (30 Jan 2014)
# 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
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
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 37.2923)
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
Memory usage per processor = 22.3334 Mbytes
Step Atoms KinEng 1 Volume
0 128000 3136556.5 6404.5051 119335.13
100 128000 3137168.3 6284.3873 119338.83
Loop time of 0.981477 on 4 procs for 100 steps with 128000 atoms
Pair time (%) = 0.507874 (51.7459)
Neigh time (%) = 0.0444019 (4.52399)
Comm time (%) = 0.065434 (6.6669)
Outpt time (%) = 0.000373006 (0.0380046)
Other time (%) = 0.363394 (37.0252)
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
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