Download High Performance Computing on Vector Systems: Proceedings of by Satoru Tagaya, Masato Nishida, Takashi Hagiwara, Takashi PDF

By Satoru Tagaya, Masato Nishida, Takashi Hagiwara, Takashi Yanagawa, Yuji Yokoya (auth.), Michael Resch, Thomas Bönisch, Katharina Benkert, Wolfgang Bez, Toshiyuki Furui, Yoshiki Seo (eds.)

InMarch2005about40scientistsfromEurope,JapanandtheUScametogether the second one time to debate how you can in achieving sustained functionality on superc- puters within the diversity of Tera?ops. The workshop held on the excessive functionality Computing heart Stuttgart (HLRS) used to be the second one of this type. The ?rst one have been held in may possibly 2004. At either workshops and software program matters have been provided and purposes have been mentioned that experience the aptitude to scale and attain a really excessive point of sustained functionality. The workshops are a part of a collaboration shaped to deliver to lifestyles an idea that used to be constructed in 2000 at HLRS and known as the “Tera?op Workbench”. the aim of the collaboration into which HLRS and NEC entered in 2004 used to be to show this idea right into a genuine software for scientists and engineers. major pursuits have been set out through either companions: • to teach for numerous purposes from di?erent ?elds sustained point of functionality within the variety of numerous Tera?ops is feasible. • to teach that di?erent structures (vector dependent platforms, cluster structures) may be coupled to create a hybrid supercomputer method from which purposes can harness an excellent better point of sustained performance.

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Extra info for High Performance Computing on Vector Systems: Proceedings of the High Performance Computing Center Stuttgart, March 2005

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HLRS/NEC: Teraflop workbench. de/ (2005) 6. : Large–eddy simulation of complex turbulent flows of practical interest. : Flow Simulation with High–Performance Computers II. , Vieweg Verlag, Braunschweig (1996) 258–274 7. : Large–eddy simulation of the sub–critical flow past a circular cylinder: Numerical and modeling aspects. Int. J. for Numer. Methods in Fluids 28 (1998) 1281–1302 8. : A challenging test case for large–eddy simulation: High Reynolds number circular cylinder flow. Int. J. of Heat and Fluid Flow 21 (2000) 648–654 9.

Better utilization of the multiple vector pipes can be achieved by completely unrolling the streaming loops and thus increasing the volume of work within the vectorized loops. We have verified that this strategy does indeed give better performance than the original algorithm on both the ES and SX-8, and show results that illustrate this in the next section. Turning to the X1, the compiler did an excellent job, multi-streaming the outer grid point loop and vectorizing the inner grid point loop after unrolling the stream loops without any user code restructuring.

References 1. : Scientific computations on modern parallel vector systems. In: Proc. SC2004: High performance computing, networking, and storage conference. (2004) 2. Oliker, L. : Evaluation of cache-based superscalar and cacheless vector architectures for scientific computations. In: Proc. SC2003: High performance computing, networking, and storage conference. (2003) 3. : Top500 Supercomputer Sites. org) 4. : The lattice Boltzmann equation for fluids and beyond. Oxford Science Publ. (2001) 5. : Lattice kinetic schemes for magnetohydrodynamics.

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