This directory contains libraries that can be linked to when building LAMMPS, if particular packages are included in the LAMMPS build. Most of these directories contain code for the library; some contain a Makefile.lammps file that points to where the library is installed elsewhere on your system. In either case, the library itself must be installed and/or built first, so that the appropriate library files exist for LAMMPS to link against. Each library directory contains a README with additional info about how to acquire and/or build the library. This may require you to edit one of the provided Makefiles to make it suitable for your machine. The libraries in this directory are the following: atc atomistic-to-continuum methods, USER-ATC package from Reese Jones, Jeremy Templeton, Jon Zimmerman (Sandia) awpmd antisymmetrized wave packet molecular dynamics, AWPMD package from Ilya Valuev (JIHT RAS) colvars collective variable module (Metadynamics, ABF and more) from Giacomo Fiorin and Jerome Henin (ICMS, Temple U) compress hook to system lib for performing I/O compression, COMPRESS pkg from Axel Kohlmeyer (Temple U) gpu general GPU routines, GPU package from Mike Brown (ORNL) h5md ch5md library for output of MD data in HDF5 format from Pierre de Buyl (KU Leuven) kim hooks to the KIM library, used by KIM package from Ryan Elliott and Ellad Tadmor (U Minn) kokkos Kokkos package for GPU and many-core acceleration from Kokkos development team (Sandia) linalg set of BLAS and LAPACK routines needed by USER-ATC package from Axel Kohlmeyer (Temple U) meam modified embedded atom method (MEAM) potential, MEAM package from Greg Wagner (Sandia) molfile hooks to VMD molfile plugins, used by the USER-MOLFILE package from Axel Kohlmeyer (Temple U) and the VMD development team mscg hooks to the MSCG library, used by fix_mscg command from Jacob Wagner and Greg Voth group (U Chicago) netcdf hooks to a NetCDF library installed on your system from Lars Pastewka (Karlsruhe Institute of Technology) poems POEMS rigid-body integration package, POEMS package from Rudranarayan Mukherjee (RPI) python hooks to the system Python library, used by the PYTHON package from the LAMMPS development team qmmm quantum mechanics/molecular mechanics coupling interface from Axel Kohlmeyer (Temple U) quip interface to QUIP/libAtoms framework, USER-QUIP package from Albert Bartok-Partay and Gabor Csanyi (U Cambridge) reax ReaxFF potential, REAX package from Adri van Duin (Penn State) and Aidan Thompson (Sandia) smd hooks to Eigen library, used by USER-SMD package from Georg Ganzenmueller (Ernst Mach Institute, Germany) voronoi hooks to the Voro++ library, used by compute voronoi/atom command from Daniel Schwen (LANL) vtk hooks to the VTK library, used by dump custom/vtk command from Richard Berger (JKU)