TY - GEN
T1 - Energy-efficient on-chip networks through profiled hybrid switching
AU - He, Yuan
AU - Jiao, Jinyu
AU - Cao, Thang
AU - Kondo, Masaaki
N1 - Funding Information:
First and foremost, we would like to sincerely thank the anonymous reviewers for their valuable comments. This work was supported, in part, by JST CREST from Japan with Grant JPMJCR18K1 and by the Natural Science Foundation of Liaoning Province in China under Grant 20180550194.
Publisher Copyright:
© 2020 Association for Computing Machinery.
PY - 2020/9/7
Y1 - 2020/9/7
N2 - 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.
AB - 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.
KW - Circuit-switching
KW - Energy
KW - Latency
KW - Networks-on-chip
KW - Virtual channels
UR - http://www.scopus.com/inward/record.url?scp=85091303352&partnerID=8YFLogxK
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U2 - 10.1145/3386263.3406934
DO - 10.1145/3386263.3406934
M3 - Conference contribution
AN - SCOPUS:85091303352
T3 - Proceedings of the ACM Great Lakes Symposium on VLSI, GLSVLSI
SP - 241
EP - 246
BT - GLSVLSI 2020 - Proceedings of the 2020 Great Lakes Symposium on VLSI
PB - Association for Computing Machinery
T2 - 30th Great Lakes Symposium on VLSI, GLSVLSI 2020
Y2 - 7 September 2020 through 9 September 2020
ER -
