High Performance Computing on Vector Systems 2006: by Thomas Bönisch, Sunil Tiyyagura, Toshiyuki Furui, Yoshiki PDF

By Thomas Bönisch, Sunil Tiyyagura, Toshiyuki Furui, Yoshiki Seo, Wolfgang Bez

ISBN-10: 354047692X

ISBN-13: 9783540476924

ISBN-10: 3540687432

ISBN-13: 9783540687436

The publication provides the state of the art in excessive functionality computing and simulation on glossy supercomputer architectures. It covers tendencies in excessive functionality program software program improvement normally and particularly for parallel vector architectures. The contributions hide between others the sector of computational fluid dynamics, physics, chemistry, and meteorology. cutting edge program fields like reactive stream simulations and nano expertise are presented.

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Extra info for High Performance Computing on Vector Systems 2006: Proceedings of the High Performance Computing Center Stuttgart, March 2006

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InfiniBand shows the similar performance of BlueGene/L. As giga-bit ether networks have long latency and low bandwidth, they are not adequate for the execution of parallel programs with a large number of d a t a communications. The SX vector systems show quite higher bandwidth compared with the scalar systems. Of course, the internal crossbar switch of SX-7 achieves high Implication of Memory Performance 33 1,4 "Q. 1,2 a 1,0 CD •^0,8 o I 0,4 "S 0,2 ^ a. 0,0 m Q. I CD T3 CD LL BG/L Aitix p5-575 p655 XT3 XI Power Edge Sun Fire SX-7 SX-7C SX-8 32MP1 40MP1 576MPi (HLRS) Fig.

4 Gfliop/s per Core). A Montecito core has an enlarged L3 cache of 12MB, and the FSB is also accelerated by 30% from t h a t of TX7/i9510. 8GB;S Inter-Cell Network (Crossbar) Fig. 29. 2 E x i j e r i r n e n t a l R e s u l t s a n d D i s c u s s i o n Currently, as the 19610 is stiU under developing^, we discuss the results of one Montecito Core evaluation. Figure 30 shows the perfVjrmance of one Montecito core of TX7/i9610 normahzed by i9510's performance discussed in the previous section. For comparison, the performance of Altix 3700 discussed in the previous section is also provided.

S. 5 T •f 8. 1 8i m m •— — • A— . A « * ; r fa_ . 5 y 7 1 ? 5 8 0 logj,,(N»iiiber of grid points/CPU) Fig. 3. 2 GFlop/s. In the SGI Altix two processors have to share one memory connection. 29 GFlop/s. Prefetching is still important but not as efficient as for one processor. Furthermore, in Fig. 3 weak scaling results for up to 120 Itanium 2 CPUs are given revealing that the scaling inside a node is very satisfactory. From a programmer's view, the NEC SX-8 is a traditional vector processor with 4-track vector pipes running at 2 GHz.

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High Performance Computing on Vector Systems 2006: Proceedings of the High Performance Computing Center Stuttgart, March 2006 by Thomas Bönisch, Sunil Tiyyagura, Toshiyuki Furui, Yoshiki Seo, Wolfgang Bez


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