Files
lammps/examples/multi/log.30Nov20.granular.intel.1
2021-02-05 16:43:52 -07:00

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Groff

LAMMPS (24 Dec 2020)
OMP_NUM_THREADS environment is not set. Defaulting to 1 thread. (../comm.cpp:97)
using 1 OpenMP thread(s) per MPI task
# Big colloid particles and small LJ particles
units lj
atom_style sphere
dimension 2
lattice sq 0.5
Lattice spacing in x,y,z = 1.4142136 1.4142136 1.4142136
region box block 0 60 0 60 -0.5 0.5
create_box 2 box
Created orthogonal box = (0.0000000 0.0000000 -0.70710678) to (84.852814 84.852814 0.70710678)
1 by 1 by 1 MPI processor grid
create_atoms 1 box
Created 3600 atoms
create_atoms CPU = 0.001 seconds
change_box all triclinic
Changing box ...
triclinic box = (0.0000000 0.0000000 -0.70710678) to (84.852814 84.852814 0.70710678) with tilt (0.0000000 0.0000000 0.0000000)
# remove two spheres of small particles and add large particles in the voids
region sphere1 sphere 20.0 20.0 0.0 10.0 units box
region sphere2 sphere 60.0 60.0 0.0 10.0 units box
delete_atoms region sphere1
Deleted 154 atoms, new total = 3446
delete_atoms region sphere2
Deleted 158 atoms, new total = 3288
create_atoms 2 single 20.0 20.0 0.0 units box
Created 1 atoms
create_atoms CPU = 0.000 seconds
create_atoms 2 single 60.0 60.0 0.0 units box
Created 1 atoms
create_atoms CPU = 0.000 seconds
set type 2 mass 400
Setting atom values ...
2 settings made for mass
set type 1 mass 1
Setting atom values ...
3288 settings made for mass
set type 2 diameter 20
Setting atom values ...
2 settings made for diameter
set type 1 diameter 1
Setting atom values ...
3288 settings made for diameter
velocity all create 1.44 87287 loop geom
# multi neighbor and comm for efficiency
neighbor 1 multi #multi/old
neigh_modify delay 0 collection/interval 2 1 20
comm_modify mode multi vel yes reduce/multi #multi/old
# colloid potential
pair_style granular
pair_coeff * * hooke 1.0 0.5 tangential linear_history 1.0 0.5 0.1 damping mass_velocity
fix 1 all nph/sphere iso 0.0 1.0 10.0 drag 1.0
fix 2 all enforce2d
fix 3 all deform 1 xy erate 1e-3
#dump 1 all custom 1000 dump.granular id x y z radius
#dump 2 all image 1000 image.*.jpg type type # zoom 1.5 center d 0.5 0.5 0.5
#dump_modify 2 pad 5 adiam 1 5.0 adiam 2 1.5
#dump 3 all movie 1000 movie.mpg type type # zoom 1.5 center d 0.5 0.5 0.5
#dump_modify 3 pad 5 adiam 1 5.0 adiam 2 1.5
thermo_style custom step temp epair etotal press vol
thermo 1000
timestep 0.005
run 50000
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 21
ghost atom cutoff = 21
binsize = 1, bins = 85 85 2
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair granular, perpetual
attributes: half, newton on, size, history
pair build: half/size/multi/newton/tri
stencil: half/multi/2d/tri
bin: multi
Per MPI rank memory allocation (min/avg/max) = 10.29 | 10.29 | 10.29 Mbytes
Step Temp E_pair TotEng Press Volume
0 1.44 0 1.4395623 0.66837658 7200
1000 0.32604952 0 0.32595042 0.17341597 7862.5013
2000 0.12631038 0 0.12627198 0.069126477 8216.6956
3000 0.069351715 0 0.069330635 0.040799593 8344.1931
4000 0.045023755 0 0.04501007 0.029184795 8239.1832
5000 0.032735149 0 0.0327252 0.025640841 7943.5691
6000 0.026205227 0 0.026197262 0.021206924 7617.6672
7000 0.02165475 0 0.021648168 0.018789365 7255.2897
8000 0.018299317 0 0.018293755 0.019272158 6887.3386
9000 0.016283763 0 0.016278813 0.020434892 6524.0274
10000 0.015148918 0 0.015144313 0.021650465 6168.4941
11000 0.014180465 0 0.014176155 0.022320009 5823.98
12000 0.013505744 0 0.013501639 0.023978674 5492.4853
13000 0.013009585 0 0.01300563 0.024391329 5175.7455
14000 0.012494373 0 0.012490576 0.027331543 4874.3212
15000 0.012057669 0 0.012054004 0.030561239 4589.518
16000 0.011510988 0 0.01150749 0.034613772 4321.1694
17000 0.011198594 0 0.01119519 0.042263536 4070.0115
18000 0.010978603 0 0.010975266 0.053637275 3836.0304
19000 0.010768789 0 0.010765516 0.069472547 3619.75
20000 0.0102256 0 0.010222492 0.085332898 3420.2738
21000 0.0089630315 0 0.0089603072 0.11199196 3236.9821
22000 0.006565581 0 0.0065635854 0.14807426 3071.3012
23000 0.0050916998 0 0.0050901522 0.1903446 2923.4162
24000 0.0040345997 0 0.0040333734 0.237983 2792.2658
25000 0.0032995328 0 0.0032985299 0.29120001 2677.7475
26000 0.0024157863 0 0.002415052 0.33851944 2578.4972
27000 0.0020664445 0 0.0020658164 0.37561848 2491.0264
28000 0.0017843883 0 0.0017838459 0.41119961 2412.3871
29000 0.0011813262 0 0.0011809672 0.44749341 2341.7208
30000 0.00063084711 0 0.00063065536 0.4879202 2279.0452
31000 0.00056027405 0 0.00056010376 0.52932126 2224.9456
32000 0.00053304715 0 0.00053288513 0.56822504 2179.1224
33000 0.00052245707 0 0.00052229826 0.60025509 2140.5345
34000 0.00073726189 0 0.0007370378 0.62001489 2106.3045
35000 0.00075804791 0 0.0007578175 0.6359631 2072.525
36000 0.00052579203 0 0.00052563222 0.65678516 2038.1907
37000 0.00036977909 0 0.0003696667 0.68784389 2005.5831
38000 0.00036252798 0 0.00036241779 0.72116044 1977.7441
39000 0.00036254566 0 0.00036243547 0.74720837 1954.9127
40000 0.00036237175 0 0.00036226161 0.76605408 1934.6006
41000 0.00032453104 0 0.00032443239 0.78424188 1914.1939
42000 0.00025394755 0 0.00025387036 0.80529272 1893.064
43000 0.00021067821 0 0.00021061418 0.82962095 1872.365
44000 0.00017927684 0 0.00017922235 0.85522899 1853.531
45000 0.0001464225 0 0.000146378 0.87925998 1837.2423
46000 0.00012922979 0 0.00012919051 0.8986549 1822.9227
47000 0.0001643557 0 0.00016430575 0.91743602 1809.0605
48000 0.00020154753 0 0.00020148627 0.93686779 1794.9227
49000 0.00017742528 0 0.00017737135 0.94988773 1780.3811
50000 0.00015150521 0 0.00015145916 0.97929588 1764.7507
Loop time of 54.9135 on 1 procs for 50000 steps with 3290 atoms
Performance: 393345.914 tau/day, 910.523 timesteps/s
100.0% CPU use with 1 MPI tasks x 1 OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 44.691 | 44.691 | 44.691 | 0.0 | 81.38
Neigh | 0.21653 | 0.21653 | 0.21653 | 0.0 | 0.39
Comm | 0.75388 | 0.75388 | 0.75388 | 0.0 | 1.37
Output | 0.0011999 | 0.0011999 | 0.0011999 | 0.0 | 0.00
Modify | 8.4718 | 8.4718 | 8.4718 | 0.0 | 15.43
Other | | 0.7794 | | | 1.42
Nlocal: 3290.00 ave 3290 max 3290 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 525.000 ave 525 max 525 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 26732.0 ave 26732 max 26732 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 26732
Ave neighs/atom = 8.1252280
Neighbor list builds = 342
Dangerous builds = 0
Please see the log.cite file for references relevant to this simulation
Total wall time: 0:00:54