プロセッサ研究チーム

研究概要

主な研究成果

問題特化型高性能計算機アーキテクチャ研究プラットフォーム

半導体微細化による電力効率向上が困難となる中、問題特化型の計算機アーキテクチャが注目されています。そのために、FPGAクラスタESSPER (Elastic and Scalable System for High-Performance Reconfigurable Computing)を開発しました。また、パケット交換網上に任意のトポロジを構築可能な仮想回線交換網 VCSNを開発しました。

FPGAによる問題特化型計算ハードウェアの設計および実装

主要論文

• Franck Cappello, Sheng Di, Robert Underwood, Dingwen Tao, Jon Calhoun, Yoshii Kazutomo, Kento Sato, Amarjit Singh, Luc Giraud, Emmanuel Agullo, Xavier Yepes, Mario Acosta, Sian Jin, Jiannan Tian, Frédéric Vivien, Boyuan Zhang, Kentaro Sano, Tomohiro Ueno, Thomas Grützmacher, Hartwig Anzt
  "Multifacets of lossy compression for scientific data in the Joint-Laboratory of Extreme Scale Computing"
  FGCS (Elsevier Future Generation Computer Systems), Vol.163, DOI:10.1016/j.future.2024.05.022, 2024.
• Juan Miguel de Haro Ruiz, Carlos Alvarez Martınez, Daniel Jimenez-Gonzalez, Xavier Martorell, Tomohiro Ueno, Kentaro Sano, Burkhard Ringlein, Francois Abel, Beat Weiss
  "Automated parallel execution of distributed task graphs with FPGA clusters"
  FGCS (Elsevier Future Generation Computer Systems), Vol.160, Issue C, pp.808-824, DOI:10.1016/j.future.2024.06.041, 2024.
• Tomohiro Ueno, Emanuele Del Sozzo, Kentaro Sano
  "Flexible Systolic Array Platform on Virtual 2-D Multi-FPGA Plane"
  Proceedings of HPC Asia 2024: The International Conference on High Performance Computing in Asia-Pacific Region, pp.84–94, DOI: 10.1145/3635035.3637285, Jan 25–27, 2024.
• Emanuele Del Sozzo, Xinyuan Wang, Boma Adhi, Carlos Cortes, Jason Anderson, Kentaro Sano
  "Exploration of Trade-offs Between General-Purpose and Specialized Processing Elements in HPC-Oriented CGRA"
  Proceedings of IEEE International Parallel & Distributed Processing Symposium (IPDPS), pp.668-680, DOI: 10.1109/IPDPS57955.2024.00065., 2024.
• Emanuele Del Sozzo, Davide Conficconi, Kentaro Sano
  "Across Time and Space: Senju’s Approach for Scaling Iterative Stencil Loop Accelerators on Single and Multiple FPGAs"
  FPT Journal Track with ACM Transactions on Reconfigurable Technology and Systems (TRETS), Vol.17, Issue.2, Article No.28, pp.1-33, DOI: 10.1145/3634920, 2024.
• Philippos Papaphilippou, Kentaro Sano, Boma A. Adhi, and Wayne Luk
  "Experimental survey of FPGA-based monolithic switches and a novel queue balancer"
  IEEE Transactions on Parallel and Distributed Systems (TPDS), Vol.34, no.5, pp.1621-1634, DOI: 10.1109/TPDS.2023.3244589, 2023.
• Kentaro Sano, Atsushi Koshiba, Takaaki Miyajima, and Tomohiro Ueno
  "ESSPER: Elastic and Scalable FPGA-Cluster System for High-Performance Reconfigurable Computing with Supercomputer Fugaku"
  Proceedings of HPC Asia2023, pp.140-150, DOI: 10.1145/3578178.3579341, 2023.
• Tomohiro Ueno and Kentaro Sano
  "VCSN: Virtual Circuit-Switching Network for Flexible and Simple-to-Operate Communication in HPC FPGA Cluster"
  ACM Transactions on Reconfigurable Technology and Systems (TRETS), Vol.16, Issue.2, Article No.25, pp.1-32, DOI: 10.1145/3579848, 2023.
• Boma Adhi, Carlos Cortes, Yiyu Tan, Takuya Kojima, Artur Podobas, and Kentaro Sano
  "The Cost of Flexibility: Embedded versus Discrete Routers in CGRAs for HPC"
  Proceedings of IEEE Cluster Conference (CLUSTER), pp.347-356, DOI: 10.1109/CLUSTER51413.2022.00046, Sep 6-9, 2022.
• Artur Podobas, Kentaro Sano, and Satoshi Matsuoka
  "A Survey on Coarse-Grained Reconfigurable Architectures from a Performance Perspective"
  IEEE Access, Vol.8, pp.146719-146743, DOI:10.1109/ACCESS.2020.3012084, 2020.

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