FCC Al: actual PBE force fit, SVSL phonons, electronic and total free energy

bash run.sh
  Uses the supplied actual seven VASP datasets. Submits native ATAT postprocessing
  and independent checks through Slurm. No new VASP calculation is claimed.
bash calculate.sh
  Start in a fresh extracted directory. Generates displacements, submits seven
  new VASP GPU calculations through Slurm, and runs ATAT postprocessing.
  Optional: bash calculate.sh p100 (or v100). Both is the default.
bash plot.sh
  Redraws your computed results. Without work results it uses reference arrays.
bash plot.sh reference
  Explicitly redraws immutable original example data, for figure reproduction.

Read the two customer tutorials for inputs, units and limitations. ATAT runs on
CPU; only VASP uses GPU. Current postprocessing uses one allocated GPU-node CPU
through Slurm and does not claim GPU acceleration of ATAT itself.
Potential files and proprietary executables are not distributed. Fresh VASP
requires your licensed VASP environment and configured potential paths.
The NN force model is approximate, and its force residual is reported.
Fixed volume, fixed band structure and finite sampling are teaching choices.
QHA is separate and is not combined with fixed-volume electronic corrections.
