forked from lijiext/lammps
70 lines
1.7 KiB
Groff
70 lines
1.7 KiB
Groff
LAMMPS (30 Apr 2015)
|
|
# LAMMPS benchmark of granular flow
|
|
# chute flow of 32000 atoms with frozen base at 26 degrees
|
|
|
|
units lj
|
|
atom_style sphere
|
|
boundary p p fs
|
|
newton off
|
|
comm_modify 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
|
|
|
|
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
|
|
912 atoms in group bottom
|
|
group active subtract all bottom
|
|
31088 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
|
|
Neighbor list info ...
|
|
2 neighbor list requests
|
|
update every 1 steps, delay 0 steps, check yes
|
|
master list distance cutoff = 1.1
|
|
Memory usage per processor = 6.81783 Mbytes
|
|
Step Atoms KinEng 1 Volume
|
|
0 32000 784139.13 1601.1263 29833.783
|
|
100 32000 784292.08 1571.0968 29834.707
|
|
Loop time of 0.146584 on 4 procs for 100 steps with 32000 atoms
|
|
|
|
Pair time (%) = 0.0737562 (50.3167)
|
|
Neigh time (%) = 0.0105147 (7.17314)
|
|
Comm time (%) = 0.0147474 (10.0607)
|
|
Outpt time (%) = 0.000131965 (0.0900267)
|
|
Other time (%) = 0.0474337 (32.3594)
|
|
|
|
Nlocal: 8000 ave 8008 max 7992 min
|
|
Histogram: 2 0 0 0 0 0 0 0 0 2
|
|
Nghost: 2439 ave 2450 max 2428 min
|
|
Histogram: 2 0 0 0 0 0 0 0 0 2
|
|
Neighs: 29500.5 ave 30488 max 28513 min
|
|
Histogram: 2 0 0 0 0 0 0 0 0 2
|
|
|
|
Total # of neighbors = 118002
|
|
Ave neighs/atom = 3.68756
|
|
Neighbor list builds = 2
|
|
Dangerous builds = 0
|