def simulate_partial(self, rho, i, output: list, overheads: list, jbt, custom, seed):
     dispatcher = Dispatcher(self.number_of_tasks,
                             self.number_of_servers,
                             rho, self.d, seed,
                             jbt=jbt, custom=custom)
     mean_sys_delay, overhead = dispatcher.execute_simulation()
     output.append((i, mean_sys_delay))
     overheads.append((i, overhead))