&GLOBAL
  PRINT_LEVEL LOW
  PROJECT WALKER1
  RUN_TYPE md
&END GLOBAL

&EXT_RESTART
  RESTART_FILE_NAME WALKER1-1.restart
&END EXT_RESTART

&MOTION
  &FREE_ENERGY
    &METADYN
      DO_HILLS
      NT_HILLS 3
      WW 1.0e-3
      &METAVAR
        COLVAR 1
        SCALE 0.02
      &END METAVAR
      &MULTIPLE_WALKERS
        NUMBER_OF_WALKERS 2
        WALKER_ID 1
        &WALKERS_FILE_NAME
          ./WALKER_1.data
          ./WALKER_2.data
        &END WALKERS_FILE_NAME
      &END MULTIPLE_WALKERS
      &PRINT
        &COLVAR
          COMMON_ITERATION_LEVELS 5
        &END COLVAR
        &HILLS
          COMMON_ITERATION_LEVELS 5
        &END HILLS
      &END PRINT
    &END METADYN
  &END FREE_ENERGY
  &MD
    ENSEMBLE NVE
    STEPS 50
    TEMPERATURE 300.0
    TEMP_TOL 10.0
    TIMESTEP 1.0
  &END MD
  &PRINT
    &RESTART
      &EACH
        MD 1
      &END EACH
    &END RESTART
  &END PRINT
&END MOTION

#CPQA DEPENDS nh3-meta-walks_2.inp
&FORCE_EVAL
  METHOD FIST
  &MM
    &FORCEFIELD
      PARMTYPE CHM
      PARM_FILE_NAME ../sample_pot/nh3.pot
    &END FORCEFIELD
    &POISSON
      &EWALD
        ALPHA .44
        EWALD_TYPE spme
        GMAX 30
        O_SPLINE 6
      &END EWALD
    &END POISSON
  &END MM
  &SUBSYS
    &CELL
      ABC 10.0 10.0 10.0
    &END CELL
    &COLVAR
      &DISTANCE_POINT_PLANE
        ATOMS_PLANE 2 3 4
        ATOM_POINT 1
      &END DISTANCE_POINT_PLANE
    &END COLVAR
    &TOPOLOGY
      CONNECTIVITY UPSF
      CONN_FILE_NAME ../sample_psf/nh3.psf
      COORDINATE pdb
      COORD_FILE_NAME ../sample_pdb/nh3_1mol.pdb
    &END TOPOLOGY
  &END SUBSYS
&END FORCE_EVAL
