Hi everyone, I run into a problem recently, i.e. how to estimate the errors of the total energy per atom for a given potential? A case is the copper EAM potential, when I calculate the potential energy of a crystalline, I am not sure the accuracy is 0.1eV, 0.01eV or 0.001eV. Of the most important parameter I think is cut-off distance. Would you kind to give me some suggestions related on this issue if possible?