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lammps/examples/pour/log.15Feb16.pour.2d.g++.1
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LAMMPS (15 Feb 2016)
# Pour 2d granular particles into container
dimension 2
atom_style sphere
boundary f fm p
newton off
comm_modify vel yes
region reg block 0 100 0 50 -0.5 0.5 units box
create_box 1 reg
Created orthogonal box = (0 0 -0.5) to (100 50 0.5)
1 by 1 by 1 MPI processor grid
neighbor 0.2 bin
neigh_modify delay 0
# IMPORTANT NOTE: these values of stiffness (4000) and timestep (0.001)
# are used in this example file to produce a quick simulation and movie.
# More appropriate values for realistic simulations would be
# k = 4.0e5 and dt = 0.0001, as in bench/in.chute (if it were Hertzian).
pair_style gran/hertz/history 4000.0 NULL 100.0 NULL 0.5 0
pair_coeff * *
timestep 0.001
fix 1 all nve/sphere
fix 2 all gravity 1.0 spherical 0.0 -180.0
fix xwalls all wall/gran 4000.0 NULL 100.0 NULL 0 1 xplane 0 100
fix ywalls all wall/gran 4000.0 NULL 100.0 NULL 0 1 yplane 0 NULL
region slab block 1.0 99.0 30 34.5 -0.5 0.5 units box
fix ins all pour 1000 1 4767548 vol 0.4 10 diam range 0.5 1.0 region slab
Particle insertion: 224 every 3000 steps, 1000 by step 12001
fix 3 all enforce2d
compute 1 all erotate/sphere
thermo_style custom step atoms ke c_1 vol
thermo 1000
thermo_modify lost ignore norm no
compute_modify thermo_temp dynamic yes
#dump id all atom 250 dump.pour
#dump 2 all image 500 image.*.jpg type type # zoom 1.6 adiam 1.5
#dump_modify 2 pad 5
#dump 3 all movie 500 movie.mpg type type # zoom 1.6 adiam 1.5
#dump_modify 3 pad 5
run 25000
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 = 1.2
ghost atom cutoff = 1.2
binsize = 0.6 -> bins = 167 84 2
Memory usage per processor = 2.75187 Mbytes
Step Atoms KinEng 1 Volume
0 0 -0 0 5000
1000 224 201.77464 0 5000
2000 224 372.42868 0 5000
3000 224 599.60221 0 5000
4000 448 1084.3752 0 5000
5000 448 1592.4543 0 5000
6000 448 1763.3153 37.274939 5000
7000 672 1805.206 89.331853 5000
8000 672 1778.0015 111.58381 5000
9000 672 1592.6805 97.550311 5000
10000 896 1631.962 76.905078 5000
11000 896 1590.1527 68.644552 5000
12000 896 1564.4707 60.119562 5000
13000 1000 1490.072 56.982972 5000
14000 1000 1266.4669 57.579371 5000
15000 1000 1034.1055 46.079374 5000
16000 1000 748.70283 43.933154 5000
17000 1000 462.65166 37.522016 5000
18000 1000 327.40481 29.450285 5000
19000 1000 223.24319 31.981144 5000
20000 1000 54.792042 23.449101 5000
21000 1000 25.805484 16.352528 5000
22000 1000 20.617765 11.756965 5000
23000 1000 16.115382 7.9435503 5000
24000 1000 11.971003 5.9411126 5000
25000 1000 10.404117 4.3811155 5000
Loop time of 3.04462 on 1 procs for 25000 steps with 1000 atoms
Performance: 709447.910 tau/day, 8211.203 timesteps/s
99.9% CPU use with 1 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 1.2896 | 1.2896 | 1.2896 | 0.0 | 42.36
Neigh | 0.40714 | 0.40714 | 0.40714 | 0.0 | 13.37
Comm | 0.0080216 | 0.0080216 | 0.0080216 | 0.0 | 0.26
Output | 0.00042129 | 0.00042129 | 0.00042129 | 0.0 | 0.01
Modify | 1.2178 | 1.2178 | 1.2178 | 0.0 | 40.00
Other | | 0.1217 | | | 4.00
Nlocal: 1000 ave 1000 max 1000 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 2374 ave 2374 max 2374 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 2374
Ave neighs/atom = 2.374
Neighbor list builds = 2089
Dangerous builds = 0
Total wall time: 0:00:03
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