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LAMMPS (27 Nov 2018)
using 1 OpenMP thread(s) per MPI task
# 3d Lennard-Jones melt
units lj
atom_style atomic
lattice fcc 0.8442
Lattice spacing in x,y,z = 1.6796 1.6796 1.6796
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 1 MPI processor grid
create_atoms 1 box
Created 4000 atoms
Time spent = 0.000678539 secs
mass 1 1.0
velocity all create 3.0 87287
pair_style lj/cut 2.5
pair_coeff 1 1 1.0 1.0 2.5
neighbor 0.3 bin
neigh_modify every 20 delay 0 check no
python end_of_step_callback here """
from __future__ import print_function
from lammps import lammps
def end_of_step_callback(lmp):
L = lammps(ptr=lmp)
t = L.extract_global("ntimestep", 0)
print("### END OF STEP ###", t)
def post_force_callback(lmp, v):
L = lammps(ptr=lmp)
t = L.extract_global("ntimestep", 0)
print("### POST_FORCE ###", t)
"""
fix 1 all nve
fix 2 all python/invoke 50 end_of_step end_of_step_callback
fix 3 all python/invoke 50 post_force post_force_callback
#dump id all atom 50 dump.melt
#dump 2 all image 25 image.*.jpg type type # axes yes 0.8 0.02 view 60 -30
#dump_modify 2 pad 3
#dump 3 all movie 25 movie.mpg type type # axes yes 0.8 0.02 view 60 -30
#dump_modify 3 pad 3
thermo 50
run 250
Neighbor list info ...
update every 20 steps, delay 0 steps, check no
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 2.8
ghost atom cutoff = 2.8
binsize = 1.4, bins = 12 12 12
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/atomonly/newton
stencil: half/bin/3d/newton
bin: standard
Per MPI rank memory allocation (min/avg/max) = 3.221 | 3.221 | 3.221 Mbytes
Step Temp E_pair E_mol TotEng Press
0 3 -6.7733681 0 -2.2744931 -3.7033504
50 1.6758903 -4.7955425 0 -2.2823355 5.670064
100 1.6458363 -4.7492704 0 -2.2811332 5.8691042
150 1.6324555 -4.7286791 0 -2.280608 5.9589514
200 1.6630725 -4.7750988 0 -2.2811136 5.7364886
250 1.6275257 -4.7224992 0 -2.281821 5.9567365
Loop time of 0.732007 on 1 procs for 250 steps with 4000 atoms
Performance: 147539.519 tau/day, 341.527 timesteps/s
99.8% CPU use with 1 MPI tasks x 1 OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.60651 | 0.60651 | 0.60651 | 0.0 | 82.86
Neigh | 0.092702 | 0.092702 | 0.092702 | 0.0 | 12.66
Comm | 0.013686 | 0.013686 | 0.013686 | 0.0 | 1.87
Output | 0.00016069 | 0.00016069 | 0.00016069 | 0.0 | 0.02
Modify | 0.016055 | 0.016055 | 0.016055 | 0.0 | 2.19
Other | | 0.00289 | | | 0.39
Nlocal: 4000 ave 4000 max 4000 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 5499 ave 5499 max 5499 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 151513 ave 151513 max 151513 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 151513
Ave neighs/atom = 37.8783
Neighbor list builds = 12
Dangerous builds not checked
Total wall time: 0:00:00
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