A Scalability Analysis of Many Cores and On-Chip Mesh Networks on the TILE-Gx Platform

Ye Liu, Hiroshi Sasaki, Shinpei Kato, Masato Edahiro

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

TILE-Gx processors that have emerged in recent years can be considered as the representative of prevailing many-core processors. The available TILE-Gx processors are featured with directory-based cache coherence protocol, two-dimensional mesh networks and up to 72 on-chip cores. In this paper, we study and analyze problems of performance scalability and network collision of many-core processors using the TILE-Gx36 processor. We find that most multi-threaded programs from the PARSEC benchmark suite, which aim at shared-memory on-chip processors, cannot scale well on Linux as the number of cores increases. Meanwhile, applications compiled with Pthreads get affected by the approach of task-to-core assignment. The results also show that current multi-threaded applications do not entirely utilize the hardware resources on TILE-Gx36 processor. Moreover, OS designers might need to pay attention to the memory allocation if memory stripping is not supported. Because huge memory accesses to only one memory controller can burden the two-dimensional mesh network. This observation appears if cores access the further memory controllers intensively as well.

本文言語English
ホスト出版物のタイトルProceedings - IEEE 10th International Symposium on Embedded Multicore/Many-Core Systems-on-Chip, MCSoC 2016
出版社Institute of Electrical and Electronics Engineers Inc.
ページ46-52
ページ数7
ISBN(電子版)9781509035304
DOI
出版ステータスPublished - 2016 12 5
外部発表はい
イベント10th IEEE International Symposium on Embedded Multicore/Many-Core Systems-on-Chip, MCSoC 2016 - Lyon, France
継続期間: 2016 9 212016 9 23

出版物シリーズ

名前Proceedings - IEEE 10th International Symposium on Embedded Multicore/Many-Core Systems-on-Chip, MCSoC 2016

Other

Other10th IEEE International Symposium on Embedded Multicore/Many-Core Systems-on-Chip, MCSoC 2016
CountryFrance
CityLyon
Period16/9/2116/9/23

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture

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