Energy-efficient on-chip networks through profiled hybrid switching

Yuan He, Jinyu Jiao, Thang Cao, Masaaki Kondo

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

2 Citations (Scopus)


Virtual channel (VC) flow control is the de facto choice for modern networks-on-chip (NoCs) to allow better utilization of the link bandwidth through buffering and packet switching (PS), which are also the sources of large power footprint and long per-hop latency. However, bandwidth can be plentiful for parallel workloads under VC flow control. Thus, dated but simpler mechanisms, such as circuit switching (CS), can help improve the energy efficiency of modern NoCs. In this paper, we propose to apply CS to part of the link bandwidth so that a considerable amount of traffic can be transmitted bufferlessly without routing. Evaluations reveal that this proposal leads to a reduction of energy per flit by up to 32% while also provides very competitive latency when compared to networks under VC flow control.

Original languageEnglish
Title of host publicationGLSVLSI 2020 - Proceedings of the 2020 Great Lakes Symposium on VLSI
PublisherAssociation for Computing Machinery
Number of pages6
ISBN (Electronic)9781450379441
Publication statusPublished - 2020 Sept 7
Externally publishedYes
Event30th Great Lakes Symposium on VLSI, GLSVLSI 2020 - Virtual, Online, China
Duration: 2020 Sept 72020 Sept 9

Publication series

NameProceedings of the ACM Great Lakes Symposium on VLSI, GLSVLSI


Conference30th Great Lakes Symposium on VLSI, GLSVLSI 2020
CityVirtual, Online


  • Circuit-switching
  • Energy
  • Latency
  • Networks-on-chip
  • Virtual channels

ASJC Scopus subject areas

  • Engineering(all)


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