 APBS minim test
 &cntrl
   maxcyc=100, imin=1,
   cut=12.0,
   igb=6, ntb=0,
   ntpr=1,
 /
 &apbs
    apbs_debug = 0, apbs_print=0,
    grid = 0.5, 0.5, 0.5,
    calc_type = 0,
    cmeth=1,
 bcfl=2,
 srfm=2,
 chgm=1,
 pdie=2.0,
 sdie=78.54,
 radiopt=2, pqr='2ala.pqr',
 calcforce=2, calcnpenergy=1, calcnpforce=2,
&end
