This is an introduction to the basics of LAMMPS—a widely used package for molecular dynamics, Monte Carlo, energy minimization, and peridynamics simulations. We present the LAMMPS conventions for units, simulation box, and coordinates. We review in detail the format of the input and input file, and how to run LAMMPS on your laptop/desktop. To illustrate this introduction, we take the example of the molecular dynamics simulation of a silica (SiO2) glass.
