&GLOBAL
  PRINT_LEVEL MEDIUM
  PROJECT res_silica
  RUN_TYPE GEO_OPT
&END GLOBAL

&MOTION
  &GEO_OPT
    MAX_ITER 1
    OPTIMIZER BFGS
  &END GEO_OPT
&END MOTION

&FORCE_EVAL
  METHOD FIST
  &MM
    &FORCEFIELD
      &NONBONDED
        &WILLIAMS
          A 208920748.3395
          ATOMS SI O
          B 4.87318
          C 1549614.30961
          RCUT 36.0
        &END WILLIAMS
        &WILLIAMS
          A 0.0
          ATOMS SI H
          B 0.0
          C 0.0
          RCUT 36.0
        &END WILLIAMS
        &WILLIAMS
          A 0.0
          ATOMS SI SI
          B 0.0
          C 0.0
          RCUT 36.0
        &END WILLIAMS
        &WILLIAMS
          A 1350000.7166855
          ATOMS O H
          B 3.24430
          C 1450.53575
          RCUT 36.0
        &END WILLIAMS
        &WILLIAMS
          A 16115719.1363
          ATOMS O O
          B 2.76000
          C 2030750.05696
          RCUT 36.0
        &END WILLIAMS
        &WILLIAMS
          A 0.0
          ATOMS H H
          B 0.0
          C 0.0
          RCUT 36.0
        &END WILLIAMS
      &END NONBONDED
    &END FORCEFIELD
    &POISSON
      &EWALD
        ALPHA .44
        EWALD_TYPE ewald
        GMAX 21
      &END EWALD
    &END POISSON
  &END MM
  &SUBSYS
    &CELL
      ABC 11.24 10.80 8.40
    &END CELL
    &TOPOLOGY
      CONNECTIVITY UPSF
      CONN_FILE_NAME ../sample_psf/silicon_cluster.psf
      COORDINATE PDB
      COORD_FILE_NAME ../sample_pdb/silicon_cluster.pdb
    &END TOPOLOGY
  &END SUBSYS
&END FORCE_EVAL
