&FORCE_EVAL
  METHOD FIST
  &MM
    &FORCEFIELD
      parm_file_name ../sample_pot/loop.pot
      parmtype CHM
    &END FORCEFIELD
    &POISSON
      &EWALD
        EWALD_TYPE ewald
        ALPHA .36
        GMAX 29
      &END EWALD
    &END POISSON
    &PRINT
      &FF_INFO
        SPLINE_INFO
      &END
    &END
  &END MM
  &SUBSYS
    &CELL
      ABC 30.0 30.0 30.0
    &END CELL
    &TOPOLOGY
      CHARGE_BETA
      COORD_FILE_NAME ../sample_pdb/loop.pdb
      COORDINATE PDB
      CONNECTIVITY UPSF
      CONN_FILE_NAME  ../sample_psf/loop.psf
    &END TOPOLOGY
  &END SUBSYS
&END FORCE_EVAL
&GLOBAL
  PROJECT loop
  PRINT_LEVEL LOW
  RUN_TYPE md
&END GLOBAL
&MOTION
  &MD
    ENSEMBLE NVE
    STEPS 10
    TIMESTEP 2.5
    TEMPERATURE 298
    TEMP_TOL 298
  &END MD
&END MOTION
