87 lines
2.6 KiB
Groff
87 lines
2.6 KiB
Groff
LAMMPS (9 Oct 2020)
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using 1 OpenMP thread(s) per MPI task
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# granular chute flow
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units lj
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atom_style sphere
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boundary p p fs
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newton off
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comm_modify vel yes
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read_data data.granular
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Reading data file ...
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orthogonal box = (0.0000000 0.0000000 0.0000000) to (40.000000 20.000000 37.288600)
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2 by 1 by 2 MPI processor grid
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reading atoms ...
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32000 atoms
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reading velocities ...
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32000 velocities
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read_data CPU = 0.052 seconds
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pair_style gran/hooke/history 200000.0 NULL 50.0 NULL 0.5 0
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pair_coeff * *
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neighbor 0.1 bin
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neigh_modify delay 5 every 1
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timestep 0.0001
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group bottom type 2
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912 atoms in group bottom
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group active subtract all bottom
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31088 atoms in group active
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neigh_modify exclude group bottom bottom
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fix 1 all gravity 1.0 chute 26.0
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fix 2 bottom freeze
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fix 3 active nve/sphere
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compute 1 all erotate/sphere
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thermo_style custom step atoms ke c_1 vol
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thermo_modify norm no
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run 100
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Neighbor list info ...
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update every 1 steps, delay 5 steps, check yes
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max neighbors/atom: 2000, page size: 100000
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master list distance cutoff = 1.1
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ghost atom cutoff = 1.1
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binsize = 0.55, bins = 73 37 68
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1 neighbor lists, perpetual/occasional/extra = 1 0 0
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(1) pair gran/hooke/history, perpetual
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attributes: half, newton off, size, history
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pair build: half/size/bin/newtoff
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stencil: half/bin/3d/newtoff
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bin: standard
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Per MPI rank memory allocation (min/avg/max) = 10.59 | 10.59 | 10.60 Mbytes
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Step Atoms KinEng c_1 Volume
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0 32000 784139.13 1601.1263 29833.783
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100 32000 784292.08 1571.0968 29834.707
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Loop time of 0.0952788 on 4 procs for 100 steps with 32000 atoms
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Performance: 9068.124 tau/day, 1049.551 timesteps/s
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95.4% CPU use with 4 MPI tasks x 1 OpenMP threads
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MPI task timing breakdown:
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Section | min time | avg time | max time |%varavg| %total
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---------------------------------------------------------------
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Pair | 0.044316 | 0.047274 | 0.049681 | 1.0 | 49.62
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Neigh | 0.0079038 | 0.0079354 | 0.0079608 | 0.0 | 8.33
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Comm | 0.0082569 | 0.0089372 | 0.0094819 | 0.5 | 9.38
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Output | 6.9857e-05 | 9.3222e-05 | 0.00010514 | 0.0 | 0.10
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Modify | 0.015689 | 0.016034 | 0.016789 | 0.4 | 16.83
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Other | | 0.015 | | | 15.75
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Nlocal: 8000.00 ave 8008 max 7992 min
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Histogram: 2 0 0 0 0 0 0 0 0 2
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Nghost: 2439.00 ave 2450 max 2428 min
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Histogram: 2 0 0 0 0 0 0 0 0 2
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Neighs: 29500.5 ave 30488 max 28513 min
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Histogram: 2 0 0 0 0 0 0 0 0 2
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Total # of neighbors = 118002
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Ave neighs/atom = 3.6875625
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Neighbor list builds = 2
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Dangerous builds = 0
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Total wall time: 0:00:00
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