It sounds like a dumb tautology but parallel programming is easy for parallel problems. It is harder to say maintain several interlinked grid cells in a simulat

It sounds like a dumb tautology but parallel programming is easy for parallel problems. It is harder to say maintain several interlinked grid cells in a simulation in parallel than it is to partion a non-interacting set to N cores to run in parallel and let the main thread know when everything is done.