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lammps/bench-nsf/sds/log.cpu-4m-1t
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LAMMPS (22 Jul 2013-ICMS)
using 1 OpenMP thread(s) per MPI task
using multi-threaded neighbor list subroutines
prefer double precision OpenMP force kernels
1 = max bonds/atom
1 = max angles/atom
0 = max impropers/atom
orthogonal box = (-27.713 -27.713 -200) to (27.713 27.713 200)
2 by 2 by 1 MPI processor grid
3910 atoms
512 bonds
384 angles
0 impropers
2 = max # of 1-2 neighbors
2 = max # of 1-3 neighbors
2 = max # of 1-4 neighbors
4 = max # of special neighbors
2 = max # of 1-2 neighbors
2 = max # of 1-3 neighbors
4 = max # of special neighbors
orthogonal box = (-27.713 -27.713 -200) to (193.991 193.991 200)
2 by 2 by 1 MPI processor grid
62560 atoms
8192 bonds
6144 angles
2 = max # of 1-2 neighbors
2 = max # of 1-3 neighbors
4 = max # of special neighbors
PPPM initialization ...
G vector (1/distance) = 0.0800658
grid = 15 15 25
stencil order = 3
estimated absolute RMS force accuracy = 0.00264607
estimated relative force accuracy = 7.96856e-06
using double precision FFTs
3d grid and FFT values/proc = 3388 1600
Last active /omp style is kspace_style pppm/cg/omp
PPPM/cg optimization cutoff: 1e-05
Total charged atoms: 6.5%
Min/max charged atoms/proc: 6.5% 6.5%
Memory usage per processor = 18.8895 Mbytes
Step PotEng Temp E_vdwl E_coul S/CPU
0 -495659.47 325 -499273.8 -814.32954 0
100 -492323.78 309.45572 -496520.89 -844.64057 21.370809
200 -491827.03 310.65917 -495823.64 -828.59781 21.120453
300 -490499.7 310.13258 -494545.66 -815.31392 20.817828
400 -489685.55 308.35252 -493810.3 -810.17578 18.237922
500 -489024.64 310.8087 -493074.41 -820.28223 17.412541
600 -487765.36 309.25466 -491940.26 -801.65391 19.817242
700 -486753.1 309.19411 -490923.56 -800.38237 20.604677
800 -486337.63 309.28257 -490430.51 -813.57908 20.50091
900 -485991.8 310.81634 -490063.43 -811.3228 19.581773
1000 -485721.93 310.91901 -489860.62 -810.26042 20.616036
Loop time of 50.1783 on 4 procs (4 MPI x 1 OpenMP) for 1000 steps with 62560 atoms
Performance: 17.219 ns/day 1.394 hours/ns 19.929 timesteps/s
MPI task wallclock breakdown
Section | min time | avg time | max time |%total | %CPU
---------------------------------------------------------------
Pair | 38.649 | 38.9 | 39.215 | 77.52 | 97.3
Bond | 0.2279 | 0.23307 | 0.24105 | 0.46 | 87.4
Kspace | 2.8918 | 3.2737 | 3.6426 | 6.52 | 91.0
Neigh | 6.4515 | 6.5707 | 6.6579 | 13.09 | 97.4
Comm | 0.52683 | 0.5289 | 0.53199 | 1.05 | 93.6
Output | 0.00083089 | 0.00086254 | 0.00095415 | 0.00 | 100.0
Modify | 0.59133 | 0.59453 | 0.597 | 1.18 | 98.5
Other | | 0.07637 | | 0.15 |
Nlocal: 15640 ave 15715 max 15597 min
Histogram: 1 0 2 0 0 0 0 0 0 1
Nghost: 11084 ave 11104 max 11048 min
Histogram: 1 0 0 0 0 0 1 0 0 2
Neighs: 1.66414e+06 ave 1.67239e+06 max 1.65969e+06 min
Histogram: 1 1 1 0 0 0 0 0 0 1
Total # of neighbors = 6656570
Ave neighs/atom = 106.403
Ave special neighs/atom = 0.458312
Neighbor list builds = 100
Dangerous builds = 0
------------------------------------------------------------------------
This simulation made use of algorithms and methodologies described
in the following references:
The LAMMPS Molecular Dynamics Simulator, Version 22 Jul 2013
http://lammps.sandia.gov
S.J. Plimpton,
Fast Parallel Algorithms for Short-Range Molecular Dynamics,
J. Comp. Phys., 117, 1-19 (1995)
S.J. Plimpton, R. Pollock, M. Stevens,
Particle-Mesh Ewald and r-RESPA for Parallel Molecular Dynamics Simulations,
Proc. of the 8th SIAM Conference on Parallel Processing for Scientific Computing,
Minneapolis, MN (March 1997).
A.P. Thompson, S.J. Plimpton, W. Mattson,
General formulation of pressure and stress tensor for arbitrary many-body
interaction potentials under periodic boundary conditions,
J. Chem. Phys., 131, 154107 (2009)
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