The charmm2lmp sub-directory contains tools for converting files back-and-forth between the CHARMM MD code and LAMMPS. The charmm2lammps.pl perl script converts CHARMM input files into LAMMPS input. The lammps2pdb.pl perl script converts LAMMPS dump files into a pdb series file. The mkpdb.f fortran 90 code also converts LAMMPS dump files into PDB files, and the mkdcd.f tool converts LAMMPS dump files into CHARMM *.dcd trajectory files that can be read-in to CHARMM for analysis. See the README file in the charmm2lmp sub-directory for more information. These tools were written by Pieter J. in 't Veld (pjintve@sandia.gov) and Paul Crozier (pscrozi@sandia.gov) at Sandia.