Thermostating in VASP and LAMMPS For Nose-Hoover thermostate with NVT simulation: In VASP use fix nvt. In LAMMPS set MDALGO, ISIF, and SMASS. References Choice of SMASS for AIMD simulations (vasp.at) SMASS - Vaspwiki Nose-Hoover thermostat - Vaspwiki Category:Thermostats - Vaspwiki fix nvt command — LAMMPS documentation