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lammps/examples/USER/openmp/log.pour-omp
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LAMMPS (5 Jun 2010-ICMS)
# Pour granular particles into chute container, then induce flow
atom_style granular
boundary p p fm
newton off
communicate single vel yes
region reg block -10 10 -10 10 -0.5 16 units box
create_box 1 reg
Created orthogonal box = (-10 -10 -0.5) to (10 10 16)
2 by 2 by 1 processor grid
using 2 OpenMP thread(s) per MPI task
neighbor 0.2 bin
neigh_modify delay 0
# IMPORTANT NOTE: these values of stiffness (2000) 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 = 2.0e5 and dt = 0.0001, as in bench/in.chute.
pair_style gran/hooke/history/omp 2000.0 NULL 50.0 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 zlower all wall/gran/omp 2000.0 NULL 50.0 NULL 0.5 0 zplane 0.0 2000.0
region slab block -9.0 9.0 -9.0 9.0 10.0 15.0 units box
fix ins all pour 3000 1 300719 vol 0.13 50 region slab
Particle insertion: 402 every 3162 steps, 3000 by step 22135
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
run 25000
Memory usage per processor = 9.02412 Mbytes
Step Atoms KinEng 1 Volume
0 0 -0 0 6600
1000 402 779.98578 0 6600
2000 402 1424.4252 0 6600
3000 402 1425.0863 12.9927 6600
4000 804 1724.8627 47.36161 6600
5000 804 1599.9516 63.808734 6600
6000 804 1359.1774 63.495338 6600
7000 1206 1532.7896 68.602762 6600
8000 1206 1403.019 62.696462 6600
9000 1206 1246.5753 52.231964 6600
10000 1608 1384.5899 51.460162 6600
11000 1608 1242.4887 50.745726 6600
12000 1608 1197.481 42.194296 6600
13000 2010 1321.2214 47.42928 6600
14000 2010 1174.3424 42.408121 6600
15000 2010 981.67307 45.598658 6600
16000 2412 1033.7983 45.311452 6600
17000 2412 1018.2598 42.141965 6600
18000 2412 908.36873 36.678547 6600
19000 2814 1019.7476 36.378478 6600
20000 2814 949.00477 41.509969 6600
21000 2814 759.05274 39.433543 6600
22000 2814 528.88038 37.699279 6600
23000 3000 433.87518 34.124534 6600
24000 3000 359.33802 22.059403 6600
25000 3000 220.64822 22.234806 6600
Loop time of 3.34694 on 4 procs / 2 threads for 25000 steps with 3000 atoms
Pair time (%) = 1.35584 (40.5098)
Neigh time (%) = 0.469209 (14.0191)
Comm time (%) = 0.542474 (16.2081)
Outpt time (%) = 0.000692368 (0.0206866)
Other time (%) = 0.978722 (29.2423)
Nlocal: 750 ave 758 max 737 min
Histogram: 1 0 0 0 1 0 0 0 0 2
Nghost: 389 ave 397 max 377 min
Histogram: 1 0 0 0 0 0 1 1 0 1
Neighs: 3580.5 ave 3599 max 3565 min
Histogram: 1 0 0 0 2 0 0 0 0 1
Total # of neighbors = 14322
Ave neighs/atom = 4.774
Neighbor list builds = 1151
Dangerous builds = 0
dump id all xyz 1000 pour.xyz
unfix ins
fix 2 all gravity 1.0 chute 26.0
run 25000
Memory usage per processor = 9.72626 Mbytes
Step Atoms KinEng 1 Volume
25000 3000 220.64822 22.234806 6600
26000 3000 103.19986 18.174301 6600
27000 3000 98.294382 11.826361 6600
28000 3000 180.69879 11.583498 6600
29000 3000 295.25214 14.032061 6600
30000 3000 459.5425 17.683337 6600
31000 3000 689.06435 23.952376 6600
32000 3000 968.21246 31.719147 6600
33000 3000 1372.8361 35.414891 6600
34000 3000 1820.7921 46.329911 6600
35000 3000 2375.8558 54.415618 6600
36000 3000 2993.5483 61.424743 6600
37000 3000 3640.425 73.398761 6600
38000 3000 4416.5164 86.393469 6600
39000 3000 5217.0461 90.130433 6600
40000 3000 6097.8684 102.90775 6600
41000 3000 7047.8577 116.52598 6600
42000 3000 8013.5511 125.73802 6600
43000 3000 9086.1914 137.63312 6600
44000 3000 10193.555 143.90476 6600
45000 3000 11321.871 161.81092 6600
46000 3000 12420.49 163.33332 6600
47000 3000 13627.352 180.05204 6600
48000 3000 14959.689 189.04694 6600
49000 3000 16355.247 194.52038 6600
50000 3000 17641.109 221.05346 6600
Loop time of 5.60801 on 4 procs / 2 threads for 25000 steps with 3000 atoms
Pair time (%) = 2.34494 (41.8141)
Neigh time (%) = 0.666394 (11.8829)
Comm time (%) = 0.912153 (16.2652)
Outpt time (%) = 0.0606593 (1.08165)
Other time (%) = 1.62387 (28.9562)
Nlocal: 750 ave 759 max 734 min
Histogram: 1 0 0 0 0 0 0 1 1 1
Nghost: 403.25 ave 410 max 394 min
Histogram: 1 0 0 0 0 1 0 0 1 1
Neighs: 3676.25 ave 3722 max 3628 min
Histogram: 1 0 1 0 0 0 0 1 0 1
Total # of neighbors = 14705
Ave neighs/atom = 4.90167
Neighbor list builds = 801
Dangerous builds = 0
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