Evaluation of SPEC CPU and SPEC OMP on the A64FX

Yuetsu Kodama, Masaaki Kondo, Mitsuhisa Sato

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

1 Citation (Scopus)

Abstract

We evaluated the A64FX processor used in the supercomputer Fugaku using the SPEC CPU and SPEC OMP benchmark suites. As a result, we found the performance of the A64FX processor, which had 48 cores, was lower than that of the Xeon with dual sockets of 24 cores each in SPEC CPU int and fp. In SPEC OMP, due to the effect of the Xeon's Hyperthread, the A64FX performance was lower than the performance of the Xeon with single socket of 28 cores. But in several benchmarks in SPEC CPU fp and SPEC OMP, the A64FX performance was higher due to its high memory bandwidth. In addition, by comparing the performance and power using the power control mechanism of the A64FX, it was confirmed that power can be reduced without affecting the performance when not using all cores.

Original languageEnglish
Title of host publicationProceedings - 2021 IEEE International Conference on Cluster Computing, Cluster 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages553-561
Number of pages9
ISBN (Electronic)9781728196664
DOIs
Publication statusPublished - 2021
Externally publishedYes
Event2021 IEEE International Conference on Cluster Computing, Cluster 2021 - Virtual, Portland, United States
Duration: 2021 Sep 72021 Sep 10

Publication series

NameProceedings - IEEE International Conference on Cluster Computing, ICCC
Volume2021-September
ISSN (Print)1552-5244

Conference

Conference2021 IEEE International Conference on Cluster Computing, Cluster 2021
Country/TerritoryUnited States
CityVirtual, Portland
Period21/9/721/9/10

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Signal Processing

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