LAMMPS (23 Jun 2017) using 1 OpenMP thread(s) per MPI task # AIREBO polyethelene benchmark units metal atom_style atomic read_data data.airebo orthogonal box = (-2.1 -2.1 0) to (2.1 2.1 25.579) 1 by 1 by 4 MPI processor grid reading atoms ... 60 atoms replicate 17 16 2 orthogonal box = (-2.1 -2.1 0) to (69.3 65.1 51.158) 2 by 2 by 1 MPI processor grid 32640 atoms neighbor 0.5 bin neigh_modify delay 5 every 1 pair_style airebo/morse 3.0 1 1 pair_coeff * * ../../potentials/CH.airebo-m C H Reading potential file ../../potentials/CH.airebo-m with DATE: 2016-03-15 velocity all create 300.0 761341 fix 1 all nve timestep 0.0005 thermo 10 run 100 Neighbor list info ... update every 1 steps, delay 5 steps, check yes max neighbors/atom: 2000, page size: 100000 master list distance cutoff = 10.7 ghost atom cutoff = 10.7 binsize = 5.35, bins = 14 13 10 1 neighbor lists, perpetual/occasional/extra = 1 0 0 (1) pair airebo/morse, perpetual attributes: full, newton on, ghost pair build: full/bin/ghost stencil: full/ghost/bin/3d bin: standard Per MPI rank memory allocation (min/avg/max) = 29.37 | 29.75 | 30.13 Mbytes Step Temp E_pair E_mol TotEng Press 0 300 -139283.82 0 -138018.14 152.25271 10 166.76148 -138718.75 0 -138015.19 17412.343 20 207.7293 -138891.79 0 -138015.4 -19395.339 30 138.54469 -138596.42 0 -138011.92 -11909.248 40 153.95239 -138661.7 0 -138012.19 -2448.7701 50 126.22907 -138545.12 0 -138012.57 5206.1374 60 181.02757 -138778.28 0 -138014.54 22506.777 70 185.72779 -138799.18 0 -138015.61 -10803.744 80 164.28396 -138709.5 0 -138016.4 -1524.7353 90 180.26403 -138776.42 0 -138015.9 -27143.467 100 164.05694 -138706.58 0 -138014.44 5157.5516 Loop time of 32.9268 on 4 procs for 100 steps with 32640 atoms Performance: 0.131 ns/day, 182.927 hours/ns, 3.037 timesteps/s 99.4% CPU use with 4 MPI tasks x 1 OpenMP threads MPI task timing breakdown: Section | min time | avg time | max time |%varavg| %total --------------------------------------------------------------- Pair | 28.045 | 28.537 | 29.42 | 10.4 | 86.67 Neigh | 3.163 | 3.237 | 3.3761 | 4.7 | 9.83 Comm | 0.09883 | 1.1206 | 1.6862 | 60.4 | 3.40 Output | 0.00099325 | 0.0011329 | 0.0012462 | 0.3 | 0.00 Modify | 0.016013 | 0.016726 | 0.017257 | 0.4 | 0.05 Other | | 0.01459 | | | 0.04 Nlocal: 8160 ave 8167 max 8153 min Histogram: 1 0 1 0 0 0 0 1 0 1 Nghost: 22581 ave 22594 max 22569 min Histogram: 1 0 0 0 1 1 0 0 0 1 Neighs: 0 ave 0 max 0 min Histogram: 4 0 0 0 0 0 0 0 0 0 FullNghs: 5.55273e+06 ave 5.55908e+06 max 5.54496e+06 min Histogram: 1 0 0 0 0 1 1 0 0 1 Total # of neighbors = 22210922 Ave neighs/atom = 680.482 Neighbor list builds = 8 Dangerous builds = 0 Total wall time: 0:00:33