Prediction Switching for Photonic Network-on-chip

概要

論文の詳細を見る
Scalable network-on-chip (NoC) infrastructure faces critical challenges in meeting the enormous bandwidth requirement, low latency and low power consumption for future multiprocessors. With the development of nanophotonics, optical interconnection has been proposed as potential solution to replace the electric NoC which requires large power consumption caused by its electric component. However, buffering optical data is still difficult to be implemented at the chip level. In this paper, we discuss hybrid photonic NoC (HPNoC) that uses optical properties to improve the bandwidth and electric properties for setting up the circuit that avoids buffering of optical data. The crucial performance factor of the HPNoC is the setup time of optical circuit by using the electric NoC. We propose to apply a prediction switching to the electric NoC for reducing the path setup time of the HPNoC. Estimation results show that even in small data-size (14 Bytes), HPNoC with the prediction switching reduces the latency compared with the original HPNoC. The HPNoC also reduces latency compared with conventional electric NoC even in small-sized data communication.
一般社団法人情報処理学会の論文
2009-07-28