High performance embedded computing by wayne wolf

... common expression elimination, code motion, exponentiation optimization, optimization of masked operations, loop unrolling, loop fusion, inline subroutine expansion, conversion of division to ... optimization features including automatic vectorization and automatic parallelization, partial and conditional vectorization, index migration, loop collapsing, nested loop vectorization, conversions,...

Ngày tải lên: 15/12/2013, 13:15

... thread synchronisation), yielding low performance on small domains and saturation at high performance on large domains For the pipeline-parallel (SGI Altix) 3-D implementation a maximum performance ... originally developed for high- performance vector computers such as CRAY, NEC or Fujitsu, it achieves high vectorization ratios (> 99.8%) In the context of vectorization, thr...

Ngày tải lên: 24/12/2013, 19:15

... equilibrium condition, the conventional Fermi-Golden rule dealing the electron-phonon coupling thus does not work Under such a non-equilibrium condition, the real-time propagation must be treated ... electronic excitations [5] In addition to the ‘real-time propagation’ of electrons [4], we treat ionic motion within Ehrenfest approximation [6] Since ion dynamics requires typical simulation tim...

Ngày tải lên: 24/12/2013, 19:15

... good portion of the theoretical peak performance on the vector machine Block operations are not only efficient on vector systems, but also on scalar architectures [9] The results of matrix vector ... 1.3 Vector Optimization To achieve high performance on a vector architecture there are three main variants of vectorization tuning: – compiler flags – compiler directives – c...

Ngày tải lên: 24/12/2013, 19:15

... separate OFA has only a minor effect on the NOx-emission In order to work on this combustion optimization problem in virtual reality, a high- resolution boiler model with million grid points was ... Chimera-part contains many integer operations and non-vectorized if-branches, whereas the flow solution procedure has a simple code structure, is well vectorized and contains only floating point...

Ngày tải lên: 24/12/2013, 19:15

... SX6+ the performance increases subproportionally beyond CPUs For the Γ -point only version, the scaling degrades beyond CPUs, but this version is still faster than the full version If only the ... purchase PDF Split-Merge on www.verypdf.com to remove this watermark 158 A Ruprecht Simulation Method 2.1 Governing Equations In this work an incompressible fluid with constant properties is c...

Ngày tải lên: 24/12/2013, 19:15

... region Only the molecule positions of the “halo” molecules have to be communicated, which is done in consecutive steps: first x, then y and final the z direction The diagonal directions are done ... This model was on the way to an explosion, although probably a weak one, in contrast to simulations of the same star with a constrained Please purchase PDF Split-Merge on www.verypdf.com to re...

Ngày tải lên: 24/12/2013, 19:15

... Discretization As we use a conservative formulation, convective terms are discretized as one term to better restrain conservation equations Viscous terms are expanded because computing the second derivative ... the conservative variables Q 2.5 Boundary Conditions The modular concept for boundary conditions allows the application of the code to a variety of compressible flows Each boundary co...

Ngày tải lên: 24/12/2013, 19:15

... three-dimensional simulations, we plan to implement the FFT routines installed on the NEC SX-8 machine As communication is not depending on spanwise resolution, we hope that performance in 3-d computations ... details on the mechanisms of sound generation with the intention to control jet-induced noise Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark Di...

Ngày tải lên: 24/12/2013, 19:15

... and phycocyanins, HPLC separation allowed a quantitative estimation of the relative amount of each protein component from the area underlying each peak This was facilitated by the fact that the ... region rich in amino acids with a higher than average contribution to the UV optical absorption and protonation of amino groups by electrospray ionization, leading to fals...

Ngày tải lên: 08/03/2014, 16:20

Ngày tải lên: 09/03/2014, 22:20

... Introduction to High Performance Computing 1.2.1 What Is High Performance Computing 1.2.1.1 Why Worry About Performance? yver the l—st de™—deD the de(nition of wh—t is ™—lled high perform—n™e ... 1.2.1.2 Scope of High Performance Computing righ perform—n™e ™omputing runs — ˜ro—d r—nge of systemsD from our desktop ™omputers through l—rge p—r—llel pro™essing systemsF fe™—us...

Ngày tải lên: 13/06/2014, 15:57