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Title
Japanese:異種アクセラレータを持つヘテロ型スーパーコンピュータ上のLinpack の性能向上手法 
English:Linpack Tuning Method on a Heterogeneous Supercomputer with Hybrid Accelerators 
Author
Japanese: 遠藤 敏夫, 額田 彰, 松岡 聡, 丸山 直也.  
English: Toshio Endo, Akira Nukada, Satoshi Matsuoka, Naoya Maruyama.  
Language Japanese 
Journal/Book name
Japanese:情報処理学会研究報告 
English:IPSJ SIG Technical Report 
Volume, Number, Page Vol. 2009-HPC-121    No. 24    Page 8
Published date Aug. 2009 
Publisher
Japanese:情報処理学会 
English:IPSJ 
Conference name
Japanese:並列/分散/協調処理に関するサマーワークショップ(SWoPP2009) 
English:Summer United Workshops on Parallel, Distributed and Cooperative Processing (SWoPP2009) 
Conference site
Japanese:仙台 
English:Sendai 
Official URL http://www.hpcc.jp/swopp/
 
Abstract We report Linpack benchmark results on the TSUBAME supercomputer, a large scale heterogenous system with graphics processing units (GPUs) and ClearSpeed SIMD accelerators. With all of about 10,000 Opteron cores, 640 Xeon cores, 648 ClearSpeed accelerators and 624 NVIDIA Tesla GPUs, we have achieved 87TFlops. This paper describes careful tuning and load balancing method required to achieve this performance. On the other hand, since the peak speed is 163 TFlops, the efficiency is 53%, which is slower than other systems. This paper also discusses the reason of this gap from the aspect of system architecture.

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