⁄ . An optimization cycle is terminated prematurely if no improvement occurred within 6 swarm iterations. Default settings readily allow to perform accurate bonded parametrization of virtually any CG model, as long as the provided topology and potential functions are relevant. The accuracy and execution times of Swarm-CG are expected to satisfy molecular modelers requirements for optimization of up to approximately 100 free parameters, which represent approximately 50 groups of bonds, angles and dihedrals (i.e., many more geoms in symmetrical molecules). Beyond that, users can easily access Swarm-CG parameters, for example, to increase the number of optimization steps or add more optimization cycles.