LAMMPS is a classical molecular dynamics code, and an acronym for Large-scale Atomic/Molecular Massively Parallel Simulator. LAMMPS has potentials for soft materials (biomolecules, polymers) and solid-state materials (metals, semiconductors) and coarse-grained or mesoscopic systems. It can be used to model atoms or, more generically, as a parallel particle simulator at the atomic, meso, or continuum scale. LAMMPS runs on single processors or in parallel using message-passing techniques and a spatial-decomposition of the simulation domain. The code is designed to be easy to modify or extend with new functionality. Here are some examples of systems you can study with LAMMPS: Pictures from Simulations.
Before you start
Before using LAMMPS, it is important to have a general understanding of how Molecular Dynamics (MD) works. Read A molecular dynamics primer for an introduction to MD.
LAMMPS In Action
Here are some examples of how we use LAMMPS at the MacDiarmid Institute: