Optimize BPS symmetry functions to not use the CPU.
Optimize BPS symmetry functions to not use the CPU.

deepchem/deepchem,Agent007/deepchem,ktaneishi/deepchem,miaecle/deepchem,miaecle/deepchem,lilleswing/deepchem,peastman/deepchem,Agent007/deepchem,ktaneishi/deepchem,lilleswing/deepchem,deepchem/deepchem,miaecle/deepchem,ktaneishi/deepchem,peastman/deepchem,Agent007/deepchem,lilleswing/deepchem