Computational Science and High Performance Computing IV: The by Andreas Dedner, Dietmar Kröner, Nina Shokina (auth.), Egon

By Andreas Dedner, Dietmar Kröner, Nina Shokina (auth.), Egon Krause, Yurii Shokin, Michael Resch, Dietmar Kröner, Nina Shokina (eds.)

This quantity comprises 27 contributions to the Forth Russian-German complex study Workshop on Computational technological know-how and excessive functionality Computing awarded in October 2009 in Freiburg, Germany. The workshop used to be prepared together via the excessive functionality Computing middle Stuttgart (HLRS), the Institute of Computational applied sciences of the Siberian department of the Russian Academy of Sciences (ICT SB RAS) and the part of utilized arithmetic of the college of Freiburg (IAM Freiburg) The contributions diversity from computing device technology, arithmetic and excessive functionality computing to purposes in mechanical and aerospace engineering. They convey a wealth of theoretical paintings and simulation event with a possible of bringing jointly theoretical mathematical modelling and utilization of excessive functionality computing structures proposing the state-of-the-art of computational technologies.

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The TOP500 list [17] of the fastest systems in the world is led by two high performance computers that are non-standard, the IBM Roadrunner [11] on the one hand and the Cray Jaguar [12] on the other hand. Furthermore the list is dominated by systems like BlueGene [14] with a completely new architectural approach. At the same time we see future planning in large scale projects that aim at creating so called hybrid architectures. The most important of these was the Japanese Next Generation Supercomputer Project.

It is extremely unlikely that they will switch to new software. The widening gap between industrial applications and scientific applications is a danger for all high performance computing centres that are not covered by the “national security umbrella“. Most of these centres have to justify investments by proofing that the high performance computing systems have created some benefit for the country. Although climate research has become popular over the last years HPC Processor Technologies and Their Impact on Simulation 27 and although particle physics has made some achievements this will not be enough to justify the next wave of investments.

None of the systems that take a lead worldwide seems to be able to guarantee an I/O bandwidth that compares well to the required I/O of standard applications. Scalability at all levels is not an issue as long as the TOP500 list [17] mainly honours peak performance. 4 Solution Approaches There is currently no silver bullet for high performance computing [7]. Among a variety of approaches there is none that would solve all user problems. The situation is such that for most applications there is an architecture that is well suited for the problem.

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