Of course. This is entirely up to you, as with all parallel programming. You have to do the partitioning of the work across the nodes. Coordinates and forces are communicated outside the energy calculation, so you should not have to worry about that. Caveat: With the current (c35) parallel implementation you can also assume that each node has access to all coordinates, but this will change in the next release which will also support spatial decomposition. There may be other data that you have to communicate using MPI.
Last edited by lennart; 10/20/11 09:14 PM. Reason: caveat about spatial decomposition