“…Moreover, it is known, that, in general, Monte Carlo methods can be implemented more easily on parallel architecture than other methods, like, e.g., FEM-computations. The same holds for particle schemes for rarefied gas simulations and several authors already investigated parallel versions of the classical serial codes (see [3,4,10,12,14,17] and the references given there). To achieve an appropriate parallel efficiency, it is necessary to introduce adaptive load balance concepts.…”