Interatomic potential preference

Hi LAMMPS users,

As you might know, for some potential we have 2 type of form, i.e. tabulated and the usual one. So, do you know if there is any preference for using one of them? For example, I know that tabulated one is faster than the other one. But, under what situation we use former one rather than latter ?

Thanks in advance,


If you’re not careful in how you tabulate, the tabulated form will not

be as accurate as the exact anayltic expression. So many people

do not bother with tabulated forms.


Additionally, tabulated potentials can use up a lot of memory compared to analytic expression, although this is not so much of an issue nowadays (maybe it is on memory constrained hardware like GPUs).