tng file format

Main Table of Contents VERSION 5.0.5


Files with the .tng file extension can contain all kinds of data related to the trajectory of a simulation. For example, it might contain coordinates, velocities, forces and/or energies. Various .mdp file options control which of these are written by mdrun, whether data is written with compression, and how lossy that compression can be. This file is in portable binary format an can be read with gmx dump.
% gmx dump -f traj.tng
or if you're not such a fast reader:
% gmxdump -f traj.tng | more

You can also get a quick look in the contents of the file (number of frames etc.) using:

% gmx check -f traj.tng