Search space reduction for parameter tuning of a tsunami simulation on the intel knights landing processor

Kazuhiko Komatsu, Takumi Kishitani, Masayuki Sato, Akihiro Musa, Hiroaki Kobayashi

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

The structures of recent computing systems have become complicated such as heterogeneous memory systems with a deep hierarchy and many core systems. To achieve high performance of HPC applications on such computing systems, performance tuning is mandatory. However, the number of tuning parameters has become large due to the complexities of the systems and applications. In addition, along with the improvement of computing systems, HPC applications are getting larger and complicated, resulting in long execution time of each application execution. Due to a large number of tuning parameters and a long time of each execution, a time to search for an appropriate tuning parameter combination becomes huge. This paper proposes a method to reduce the time to search for an appropriate tuning parameter combination. By considering the characteristics of a many-core processor and a simulation code, a search space of tuning parameters is reduced. Moreover, a time of each application execution for parameter search is reduced by limiting a simulation period of an application unless characteristics of the application are changed. Through the evaluation of performance tuning using the tsunami simulation code on the Intel Xeon Phi Knight Landing processor, it is clarified that a 3.67x performance improvement can be achieved by the parameter tuning. It is also clarified that the time for parameter tuning can drastically be saved by reducing the number of tuning parameters to be searched and limiting the simulation period of each application execution.

本文言語English
ホスト出版物のタイトルProceedings - 2018 IEEE 12th International Symposium on Embedded Multicore/Many-Core Systems-on-Chip, MCSoC 2018
出版社Institute of Electrical and Electronics Engineers Inc.
ページ117-124
ページ数8
ISBN(電子版)9781538666890
DOI
出版ステータスPublished - 2018 11 16
イベント12th IEEE International Symposium on Embedded Multicore/Many-Core Systems-on-Chip, MCSoC 2018 - Hanoi, Viet Nam
継続期間: 2018 9 122018 9 14

出版物シリーズ

名前Proceedings - 2018 IEEE 12th International Symposium on Embedded Multicore/Many-Core Systems-on-Chip, MCSoC 2018

Other

Other12th IEEE International Symposium on Embedded Multicore/Many-Core Systems-on-Chip, MCSoC 2018
国/地域Viet Nam
CityHanoi
Period18/9/1218/9/14

ASJC Scopus subject areas

  • ハードウェアとアーキテクチャ
  • 制御およびシステム工学

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