LAMMPS is a classical molecular dynamics code with a focus on materials modeling. It's an acronym for Large-scale Atomic/Molecular Massively Parallel Simulator. LAMMPS has …

There were ~405,000 downloads of LAMMPS from Sept 2004 thru mid-year 2021. At that point we migrated our website to https://www.lammps.org and a different server, and stopped …

LAMMPS reads commands from standard input, so if all you see is the LAMMPS version number, it is probably waiting for input. You could type in commands but that would be tedious. You …

Axel Kohlmeyer organized a LAMMPS Users and Developers Workshop and Symposium at the International Centre for Theroretical Phyics (ICTP) in Trieste, Italy in March 2014. See details …

There are two kinds of movies on this page. Some are from large-scale simulations performed with LAMMPS and submitted by users. Others are simple animations of (mostly) 2d problems …

LUNAR stands for LAMMPS Utility (for) Network Analysis (and) Reactivity and is a stand alone Python (3.7+) toolkit to supplement LAMMPS. LUNAR is focused on pre-processing and post …

The forum replaces the lammps-users mailing list which was discontinued on June 30th, 2022.

The 2025 LAMMPS Workshop and Symposium will be held August 12-14, 2025 in Albuquerque, NM, USA at the University of New Mexico (UNM) Continuing Education Building (1634 …

Latest Features and Bug Fixes in LAMMPS This page is a continuous listing of new features and bug fixes for the LAMMPS molecular dynamics package. It also lists periodic "stable" versions …

•“On-the-fly” analysis: use LAMMPS to compute/accumulate/average properties of interest while the simulation is running –Use “variable” commands to perform simple calculations –Use …