Before revision:  Together with a phenomenological power model we are able to explain many peculiarities in the performance and power behavior of multicore processors, and derive guidelines for power-efficient execution of parallel programs  .
After revision:  Together with a phenomenological power model we are able to explain many peculiarities in the performance and power behavior of multicore processors, and derive guidelines for power-efficient execution of parallel programs . Finally, we show that the ECM and power models can be successfully used to describe the scaling and power behavior of a lattice-Boltzmann flow solver code .