Example: eigenvalue-only self-consistent GW@PBE calculation: H2O
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"Download GW_H2O.run"

   #! /bin/sh

   # GW calculation for Water. By default. The highest 5 occupied and lowest 5
   # unoccupied states are calculated.

   # We use an all-electron basis set since core-correlation effects are important. 
   # A QZ basis set is recommended for relatively converged QP energies 

   # Fot this example we will use the GGA PBE.
   # This is NOT a recommended starting point for a G0W0 calculation. 
   # However, the eigenvalue-only self-consistency removes most of the #
   # starting point dependence of the functional. 
   # Thererfore, PBE is a reasonable choice.  

   # RECOMMENDED: VeryGood numerical quality, 
   # especially in self-consistent GW calculations. 

   $AMSBIN/ams << eor
   Symmetry
     SymmetrizeTolerance 0.001
   End

   System
     Atoms
       O    2.220871067   0.026716792   0.000620476
       H    2.597492682  -0.411663274   0.766744858
       H    2.593135384  -0.449496183  -0.744782026
     End
     Symmetrize Yes
   End

   task SinglePoint

   Engine band
     Basis
       Core None
       Type Corr/QZ6P
     end

     NumericalQuality VeryGood

     Dependency
        AllowBasisDependency True
        basis 1e-4
     End

     RIHartreeFock
        DependencyThreshold 1e-3
     End

     SoftConfinement
        Quality Excellent
     End

     usesymmetry False

     XC
       gga PBE
     end

     GW
        selfconsistency evGW
     END
   EndEngine
   eor
