Before revision:  We choose the lattice-Boltzmann method (LBM)  as a prototype for this scenario in order to show if and how single-chip performance and power characteristics can be generalized to the highly parallel case.
After revision:  We choose the lattice-Boltzmann method (LBM) on an Intel Sandy Bridge cluster as a prototype for this scenario in order to show if and how single-chip performance and power characteristics can be generalized to the highly parallel case.