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Masahito Kumagai, Kazuhiko Komatsu, Masayuki Sato and Hiroaki Kobayashi
Combinatorial clustering based on the Ising model is drawing attention as a high-quality clustering method. However, conventional Ising-based clustering methods using the Euclidean distance cannot handle irregular data. To overcome this problem, this pap...
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Hideyuki Taguchi, Kenya Harada, Hiroaki Kobayashi, Motoyuki Hongoh, Daisaku Masaki and Shunsuke Nishida
This study investigated a pre-cooled turbojet engine for a Mach 5 class hypersonic transport aircraft. The engine was demonstrated under takeoff and Mach 2 flight conditions, and a Mach 5 propulsion wind tunnel test is planned. The engine is composed of ...
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Masayuki Sato,Takuya Toyoshima,Hikaru Takayashiki,Ryusuke Egawa,Hiroaki Kobayashi
Pág. 4 - 19
A modern memory system is equipped with many memory channels to obtain a high memory bandwidth. To take the advantage of this organization, applications? data are distributed among the channels and transferred in an interleaved fashion. Although memory-i...
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Hikaru Takayashiki,Masayuki Sato,Kazuhiko Komatsu,Hiroaki Kobayashi
Pág. 86 - 101
As the number of cores and the memory bandwidth have increased in a balanced fashion, modern vector processors achieve high sustained performances, especially in memory-intensive applications in the fields of science and engineering. However, it is diffi...
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Kenji Kitamura, Yasuko Kinoshita, Koji Ito, Sakiko Kawabe, Hideki Kobayashi, Haruka Naya, Hiroaki Sugimori, Yoshihiro Takata, Manabu Teraguchi, Chiharu Baba
Many rural areas suffer from severe depopulation, and the absence of a university is one reason for outmigration. Where research and education are valued, however, such rural areas can attract scholars and students visiting from universities and other ex...
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Kenta Yamaguchi,Takashi Soga,Yoichi Shimomura,Thorsten Reimann,Kazuhiko Komatsu,Ryusuke Egawa,Akihiro Musa,Hiroyuki Takizawa,Hiroaki Kobayashi
Pág. 36 - 47
Modern supercomputers consist of multi-core processors, and these processors have recently employed vector instructions, or so-called SIMD instructions, to improve performances. Numerical simulations need to be vectorized in order to achieve higher perfo...
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Ilya V. Afanasyev,Alexander S. Antonov,Dmitry A. Nikitenko,Vadim V. Voevodin,Vladimir V. Voevodin,Kazuhiko Komatsu,Osamu Watanabe,Akihiro Musa,Hiroaki Kobayashi
Pág. 65 - 69
The main goal of this work is to demonstrate that the development of data-intensive appli- cations for vector systems is not only important and interesting, but is also very possible. In this paper we describe possible implementations of two fundamental ...
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Alexander S. Antonov,Alexey V. Frolov,Hiroaki Kobayashi,Igor N. Konshin,Alexey M. Teplov,Vadim V. Voevodin,Vladimir V. Voevodin
Pág. 61 - 70
The comprehensive analysis of algorithmic properties of well-known. Cholesky decomposition was performed on the basis of multifold AlgoWiki technologies. There was performed a detailed analysis of information graph, data structure, memory access profile,...
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