... initializations and other overhead). The vec-tor performance achieved with the listed setups on a single CPU of the NECmachines is between 26% and 30% of the peak performance. Given that in anycase only ... Erlangen-N¨urnberg,Cauerstraße 4, D-91058 Erlangen, Germany,{kberonov,durst,noezyilm}@lstm.uni-erlangen.de,2High Performance Computing Center Stuttgart (HLRS),Nobelstraße 19, D-70569 Stuttgart, GermanyAbstract ... [15, 16, 18]. Itwas theoretically estimated that at sufficiently large block sizes LBM will havea performance advantage over the standard pseudospectral methods for planechannel DNS using the same...