126 lines
5.3 KiB
Groff
126 lines
5.3 KiB
Groff
LAMMPS (8 Feb 2023)
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OMP_NUM_THREADS environment is not set. Defaulting to 1 thread. (src/comm.cpp:98)
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using 1 OpenMP thread(s) per MPI task
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# Pour 2d granular particles into container
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dimension 2
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atom_style sphere
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boundary f fm p
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newton off
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comm_modify vel yes
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region reg block 0 100 0 50 -0.5 0.5 units box
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create_box 1 reg
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Created orthogonal box = (0 0 -0.5) to (100 50 0.5)
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1 by 1 by 1 MPI processor grid
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neighbor 0.2 bin
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neigh_modify delay 0
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# IMPORTANT NOTE: these values of stiffness (4000) and timestep (0.001)
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# are used in this example file to produce a quick simulation and movie.
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# More appropriate values for realistic simulations would be
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# k = 4.0e5 and dt = 0.0001, as in bench/in.chute (if it were Hertzian).
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pair_style gran/hertz/history 4000.0 NULL 100.0 NULL 0.5 0
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pair_coeff * *
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timestep 0.001
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fix 1 all nve/sphere
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fix 2 all gravity 1.0 spherical 0.0 -180.0
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fix xwalls all wall/gran hertz/history 4000.0 NULL 100.0 NULL 0 1 xplane 0 100
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fix ywalls all wall/gran hertz/history 4000.0 NULL 100.0 NULL 0 1 yplane 0 NULL
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region slab block 1.0 99.0 30 34.5 -0.5 0.5 units box
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fix ins all pour 1000 1 4767548 vol 0.4 10 diam range 0.5 1.0 region slab
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Particle insertion: 224 every 3000 steps, 1000 by step 12001
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fix 3 all enforce2d
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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 1000
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thermo_modify lost ignore norm no
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compute_modify thermo_temp dynamic/dof yes
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#dump id all atom 250 dump.pour
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#dump 2 all image 500 image.*.jpg type type # zoom 1.6 adiam 1.5
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#dump_modify 2 pad 5
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#dump 3 all movie 500 movie.mpg type type # zoom 1.6 adiam 1.5
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#dump_modify 3 pad 5
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run 25000
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Generated 0 of 0 mixed pair_coeff terms from geometric mixing rule
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Neighbor list info ...
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update: every = 1 steps, delay = 0 steps, check = yes
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max neighbors/atom: 2000, page size: 100000
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master list distance cutoff = 1.2
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ghost atom cutoff = 1.2
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binsize = 0.6, bins = 167 84 2
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1 neighbor lists, perpetual/occasional/extra = 1 0 0
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(1) pair gran/hertz/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: full/bin/2d
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bin: standard
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Per MPI rank memory allocation (min/avg/max) = 5.805 | 5.805 | 5.805 Mbytes
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Step Atoms KinEng c_1 Volume
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0 0 -0 0 5000
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1000 224 202.80417 0 5000
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2000 224 373.00249 0 5000
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3000 224 599.26757 0 5000
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4000 448 1078.4787 0 5000
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5000 448 1589.4845 0 5000
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6000 448 1743.8281 26.918824 5000
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WARNING: Fewer insertions than requested (src/GRANULAR/fix_pour.cpp:681)
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7000 669 1818.5075 88.370238 5000
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8000 669 1850.1368 105.77613 5000
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9000 669 1757.9791 107.52328 5000
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WARNING: Fewer insertions than requested (src/GRANULAR/fix_pour.cpp:681)
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10000 886 1792.8816 79.515458 5000
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11000 886 1639.0751 64.104708 5000
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12000 886 1541.1208 55.91813 5000
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13000 1000 1462.8753 69.093182 5000
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14000 1000 1277.8754 48.097953 5000
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15000 1000 1144.6235 50.637004 5000
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16000 1000 847.34312 43.242219 5000
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17000 1000 574.34264 41.336666 5000
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18000 1000 383.60272 32.744393 5000
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19000 1000 174.44969 31.691706 5000
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20000 1000 44.566368 14.781893 5000
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21000 1000 22.655785 9.8501131 5000
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22000 1000 17.403069 6.4074514 5000
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23000 1000 13.892292 4.8987582 5000
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24000 1000 11.699592 4.0659436 5000
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25000 1000 9.6606627 3.6642658 5000
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Loop time of 2.84114 on 1 procs for 25000 steps with 1000 atoms
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Performance: 760257.044 tau/day, 8799.271 timesteps/s, 8.799 Matom-step/s
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99.6% CPU use with 1 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 | 1.092 | 1.092 | 1.092 | 0.0 | 38.44
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Neigh | 0.30793 | 0.30793 | 0.30793 | 0.0 | 10.84
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Comm | 0.012168 | 0.012168 | 0.012168 | 0.0 | 0.43
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Output | 0.00076223 | 0.00076223 | 0.00076223 | 0.0 | 0.03
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Modify | 1.3179 | 1.3179 | 1.3179 | 0.0 | 46.38
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Other | | 0.1104 | | | 3.89
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Nlocal: 1000 ave 1000 max 1000 min
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Histogram: 1 0 0 0 0 0 0 0 0 0
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Nghost: 0 ave 0 max 0 min
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Histogram: 1 0 0 0 0 0 0 0 0 0
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Neighs: 2344 ave 2344 max 2344 min
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Histogram: 1 0 0 0 0 0 0 0 0 0
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Total # of neighbors = 2344
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Ave neighs/atom = 2.344
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Neighbor list builds = 2097
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Dangerous builds = 0
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Total wall time: 0:00:02
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