LAMMPS WWW Site

Download LAMMPS

Select the version of the code you want, click the "Download Now" button, and your browser should download a gzipped tar file. Unpack it with the following commands, and look for a README to get you started. 

gunzip file.tar.gz
tar xvf file.tar

All versions of LAMMPS are distributed under the terms of the GNU Public license. The earlier Fortran versions are no longer under active development.

LAMMPS molecular dynamics package:

LAMMPS upgrade --- Upgrade to the last major release (22 Jan 2008 C++ version) with all subsequent bug fixes and new features described on this page.
LAMMPS --- C++ version (22 Jan 2008), original release, GPL license, 13.8 Mb
LAMMPS 2001 --- older f90 version, GPL license, 1.1 Mb, last updated 17 Jan 2005
LAMMPS 99 --- older f77 version, GPL license, 840 Kb

No package

There have been ~20,500 downloads of LAMMPS since Sept 2004.

Older parallel MD codes (ParaDyn, LJ) and the Python-based Pizza.py package, which provides pre- and post-processing and viz tools for LAMMPS, are available for download from this page.