Input data

The input file contains the initial realization of the system to integrate. The input file consists of N lines, each of which have a particle id, mass, position (x, y, z) and velocity (vx, vy, vz). A selection of input files is provided on this page.

After having read the snapshot, the program should calculate the initial energy of the system and then continue integrating the equations of motion up to a pre-determined time (usually 1).

Input files:

  • Tar.gz file containing input files from 16 to 1024 particles can be found here
  • Tar.gz file containing input files from 2048 to 16384 particles can be found here

The files can be extracted using: tar -xvf filename

Example of a data file:

id m x y z vx vy vz
-1.0000 0.0625 0.2148 -0.1205 -0.2662 0.7578 0.1576 -0.0716
-1.0000 0.0625 -0.1299 0.1164 0.1331 0.4861 0.3954 -0.7347
-1.0000 0.0625 -0.4102 0.1094 -0.3244 -0.3838 0.0497 0.3788
-1.0000 0.0625 0.2551 -0.1232 -0.3705 -0.4505 -0.2817 -0.1855
-1.0000 0.0625 -0.3548 -0.3106 0.3145 0.2752 -0.5488 -0.2098
-1.0000 0.0625 0.1650 -0.2145 1.3256 0.1406 0.2362 0.2731
-1.0000 0.0625 0.4296 0.4868 0.1811 -0.0540 -0.1767 -0.6946
-1.0000 0.0625 -0.6151 0.2973 -0.4072 0.1442 0.8802 0.3729
-1.0000 0.0625 0.5268 -0.2252 -0.0858 -0.1707 0.5250 -0.1659
-1.0000 0.0625 -0.7842 2.8802 0.4228 -0.3976 -0.1935 0.1297
-1.0000 0.0625 0.5573 -0.6696 -1.1867 -0.1940 0.3186 -0.0385
-1.0000 0.0625 0.6630 -1.4547 1.0838 -0.2561 -0.2026 0.2885
-1.0000 0.0625 -0.2273 0.3481 -0.1479 0.7186 -0.0282 0.9009
-1.0000 0.0625 -0.0757 0.1508 -0.4081 -0.0569 -0.9710 -0.0215
-1.0000 0.0625 0.4666 -0.9147 0.2799 -0.4997 -0.2013 0.3137
-1.0000 0.0625 -0.6810 -0.3560 -0.5440 -0.0592 0.0410 -0.5356