forked from lijiext/lammps
70 lines
1.6 KiB
Groff
70 lines
1.6 KiB
Groff
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LAMMPS (22 June 2007)
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# LAMMPS benchmark of granular flow
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# chute flow of 32000 atoms with frozen base at 26 degrees
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variable x index 1
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variable y index 1
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units lj
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atom_style granular
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boundary p p fs
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newton off
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read_data data.chute
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orthogonal box = (0 0 0) to (40 20 37.2886)
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2 by 2 by 2 processor grid
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32000 atoms
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32000 velocities
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replicate $x $y 1
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replicate 2 $y 1
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replicate 2 4 1
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orthogonal box = (0 0 0) to (80 80 37.2887)
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2 by 4 by 1 processor grid
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256000 atoms
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pair_style gran/history 200000.0 50.0 0.5 0
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neighbor 0.1 bin
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neigh_modify every 1 delay 0
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timestep 0.0001
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group bottom type 2
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7296 atoms in group bottom
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group active subtract all bottom
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248704 atoms in group active
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neigh_modify exclude group bottom bottom
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fix 1 all gravity chute 26.0
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fix 2 bottom freeze
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fix 3 active nve/gran
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thermo_style granular
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thermo 100
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run 100
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Memory usage per processor = 32.9126 Mbytes
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Step Atoms KinEng RotKEgrn Volume
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0 256000 6273113 12809.01 238647.04
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100 256000 6274319.9 12568.11 238654.43
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Loop time of 5.21764 on 8 procs for 100 steps with 256000 atoms
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Pair time (%) = 2.551 (48.8918)
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Neigh time (%) = 0.174133 (3.3374)
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Comm time (%) = 0.643821 (12.3393)
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Outpt time (%) = 0.00319499 (0.0612344)
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Other time (%) = 1.84549 (35.3702)
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Nlocal: 32000 ave 32000 max 32000 min
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Histogram: 8 0 0 0 0 0 0 0 0 0
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Nghost: 5463 ave 5463 max 5463 min
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Histogram: 8 0 0 0 0 0 0 0 0 0
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Neighs: 115133 ave 115133 max 115133 min
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Histogram: 8 0 0 0 0 0 0 0 0 0
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Total # of neighbors = 921064
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Ave neighs/atom = 3.59791
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Neighbor list builds = 2
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Dangerous builds = 0
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