Paper Info
Title
CAMON: Low-Cost Silicon Photonic Chiplet for Manycore Processors
Abstract
While many new applications prefer manycore processor with a large number of cores, the exploding communications among multiple cores, caches, and off-chip memories is posing a fundamental challenge on manycore designs. Silicon photonics-based interconnection network promises high bandwidth, low latency, and high energy efficiency, and can potentially meet the communication requirements of manycore processors. In this paper, we propose CAMON, a small low-cost silicon photonic chiplet integrated into the manycore processor package. CAMON chiplet can effectively alleviate the communication bottlenecks of manycore processors and improve the energy efficiency of data movement, especially for large-scale systems. We develop a distributed arbitration system, a low-power low-latency optical interface, and an off-chip laser preactivation mechanism for CAMON. The experimental results show that compared with the electrical network, CAMON can improve the full-system performance per energy by <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$4.6\times $ </tex-math></inline-formula> , speedup the manycore processor by <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$2.7\times $ </tex-math></inline-formula> , and save the area of the processor die by 3%, in a 512-core system.
Year
DOI
Venue
2020
10.1109/TCAD.2019.2926495
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Keywords
DocType
Volume
Cache and memory network,manycore processor,silicon photonic chiplet
Journal
39
Issue
ISSN
Citations 
9
0278-0070
0
PageRank 
References 
Authors
0.34
0
8
Name
Order
Citations
PageRank
Zhehui Wang126224.56
Zhifei Wang2277.86
Jiang Xu370461.98
Yi-Shing Chang416217.13
Jun Feng544.91
Xuanqi Chen665.31
Shixi Chen703.38
Jiaxu Zhang802.70