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