A traffic-aware memory-cube network using bypassing

Yoshiya Shikama, Ryuta Kawano, Hiroki Matsutani, Hideharu Amano, Yusuke Nagasaka, Naoto Fukumoto, Michihiro Koibuchi

研究成果: Article査読

1 被引用数 (Scopus)


Three-dimensional stack memory which provides both high-bandwidth access and large capacity is a promising technology for next-generation computer systems. While a large number of memory cubes increase the aggregate memory capacity, the communication latency and power consumption increase significantly owing to its low-radix large-diameter packet network. In this context, we propose a memory-cube network called Diagonal Memory Network (DMN). A diagonal network topology, its floor layout, and its lightweight router were designed for low-latency and low-voltage memory-read communication. DMN routing efficiently avoids deadlocks of packets, although it allows each packet transmitted to a processor to use both bypassing and original datapaths. Our evaluation results show that the DMN router decreases the use of hardware resources by more than 31% compared with a conventional virtual channel router. The DMN router reduces energy consumption by 13% and 67% to transit a packet along with the original datapath and bypassing datapath, respectively. Furthermore, using flit-level discrete event simulation, a DMN topology achieves high throughput and latency that is lower than that of existing network topologies using conventional packet routers.

ジャーナルMicroprocessors and Microsystems
出版ステータスPublished - 2022 4月

ASJC Scopus subject areas

  • ソフトウェア
  • ハードウェアとアーキテクチャ
  • コンピュータ ネットワークおよび通信
  • 人工知能


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