Hello everybody, Sorry to post again the same question but I've got no answer so far. I have a technical question, it might be silly but I couldn't find an answer so far. How are assigned the initial velocities for the particles when Langevin dynamics is performed? In normal MD the gen_vel/gen_seed are used for random generation of the initial velocities. I am used to vary this number with the same system in order to explore the effect of different initial conditions. I was wondering if there is such a possibility with Langevin dynamics, like changing the ld_seed number? thanks, loris...