Recently I was performing some cluster-impact simulations using different eam potentials. At the early stages of contact the optimized version of eam/alloy/opt leads to an exploding system: single particles are accelerated to very high velocities and the energy conservation breaks down. On the other hand using eam/alloy with the same setfl potential file the simulation runs smoothly.
So it seems, that the optimized eam/alloy/opt potential doesn’t work for high energy impacts. Is this a bug or a non-feature?