LAMMPS Documentation

18 Jun 2019 version

What is a LAMMPS version?

LAMMPS stands for Large-scale Atomic/Molecular Massively Parallel Simulator.

LAMMPS is a classical molecular dynamics simulation code with a focus on materials modeling. It was designed to run efficiently on parallel computers. It was developed originally at Sandia National Laboratories, a US Department of Energy facility. The majority of funding for LAMMPS has come from the US Department of Energy (DOE). LAMMPS is an open-source code, distributed freely under the terms of the GNU Public License (GPL).

The LAMMPS website has a variety of information about the code. It includes links to an on-line version of this manual, a mailing list where users can post questions, and a GitHub site where all LAMMPS development is coordinated.


The content for this manual is part of the LAMMPS distribution. You can build a local copy of the Manual as HTML pages or a PDF file, by following the steps on the Manual build doc page. There is also a Developer.pdf document which gives a brief description of the basic code structure of LAMMPS.


Once you are familiar with LAMMPS, you may want to bookmark this page since it gives quick access to a doc page for every LAMMPS command.

User Documentation

Indices and tables