Exploiting the Potentials of the Second Generation SX-Aurora TSUBASA

Ryusuke Egawa, Souya Fujimoto, Tsuyoshi Yamashita, Daisuke Sasaki, Yoko Isobe, Yoichi Shimomura, Hiroyuki Takizawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

NEC SX-series vector supercomputers have provided outstanding memory bandwidths to meet the strong demands for efficient execution of memory-intensive scientific applications in practice. Inheriting the advantage, the 2nd generation SX-Aurora TSUBASA, Type 20B, provides an extremely high memory bandwidth of 1.53 TB/s per vector processor. Unlike conventional SX-series systems, SX-Aurora TSUBASA also offers various execution modes to execute a diversity of emerging scientific workloads efficiently. As a result, application developers need to understand their workloads and the performance characteristics of SX-Aurora TSUBASA, and select an optimization strategy assuming an appropriate execution mode to fully exploit the system performance. Therefore, this paper discusses workload characterization by performance bottleneck analysis to determine an optimization strategy for the 2nd generation SX-Aurora TSUBASA. The evaluation results with benchmarks and real-world applications demonstrate that the workload characterization approach can accurately find the bottleneck and characterize various workloads, by helping application developers decide the optimization strategies for individual workloads. Since we can consider SX-Aurora TSUBASA as a typical example of the latest processors with high memory bandwidths, the workload characterization approach will also be helpful for other future processors.

Original languageEnglish
Title of host publicationProceedings of PMBS 2020
Subtitle of host publicationPerformance Modeling, Benchmarking and Simulation of High Performance Computer Systems, Held in conjunction with SC 2020: The International Conference for High Performance Computing, Networking, Storage and Analysis
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages39-49
Number of pages11
ISBN (Electronic)9780738110486
DOIs
Publication statusPublished - 2020 Nov
Event2020 IEEE/ACM Performance Modeling, Benchmarking and Simulation of High Performance Computer Systems, PMBS 2020 - Virtual, Atlanta, United States
Duration: 2020 Nov 12 → …

Publication series

NameProceedings of PMBS 2020: Performance Modeling, Benchmarking and Simulation of High Performance Computer Systems, Held in conjunction with SC 2020: The International Conference for High Performance Computing, Networking, Storage and Analysis

Conference

Conference2020 IEEE/ACM Performance Modeling, Benchmarking and Simulation of High Performance Computer Systems, PMBS 2020
CountryUnited States
CityVirtual, Atlanta
Period20/11/12 → …

Keywords

  • Bottleneck Analysis
  • Bytes/Flops rate
  • Performance Tuning Strategy
  • Vector Computer

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Modelling and Simulation
  • Computer Science (miscellaneous)
  • Hardware and Architecture

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