Discover Setting interaction forces Discover Setup\Non-Bond vdW,Coulomb,vdW&Coulomb Discover Setup Automation Typing Energy Non-Bond Job Control Summation method Apply settings to: vdw Coulomb Summation method: Group Based Atom Based:Suitable for isolated Quality: Medium systems,less calculation cost for periodic More.. systems,but poor accuracy. Group based:Suitable for periodic and non-periodic systems.Better accuracy Quality and smallest calculation cost. Corse,Medium, No Cutoff:Suitable for periodic systems. Fine,Ultra-fine. Best accuracy and largest calculation cost. Cell Mutipole:Cell based.Setting interaction forces vdW, Coulomb, vdW&Coulomb Summation method Atom Based: Suitable for isolated systems, less calculation cost for periodic systems, but poor accuracy. Group based: Suitable for periodic and non-periodic systems. Better accuracy and smallest calculation cost. No Cutoff: Suitable for periodic systems. Best accuracy and largest calculation cost. Cell Mutipole: Cell based. Quality Corse, Medium, Fine, Ultra-fine. Discover Discover Setup\Non-Bond