Power Minimization in Microring-Based Benes Networks
| Autor: | Chin-Tau Lea, Bey-Chi Lin, Shuyue Chen, Yifan Huang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Interconnection
Multi-core processor Silicon photonics Computer science 02 engineering and technology Topology Optical switch Die (integrated circuit) Power (physics) 020210 optoelectronics & photonics Network on a chip CMOS Hardware_INTEGRATEDCIRCUITS 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Routing (electronic design automation) |
| Zdroj: | IEEE Transactions on Communications. 66:3517-3525 |
| ISSN: | 1558-0857 0090-6778 |
| DOI: | 10.1109/tcomm.2018.2816643 |
| Popis: | An NoC (network on chip) constructed with silicon photonic microrings can be implemented with CMOS technology and integrated with processor cores on the same die. Each microring in the NoC has two switching states, one consuming significantly less power than the other. Different routing schemes can lead to different numbers of microrings in the high-power consumption state, and result in different power consumptions for the NoC. In an earlier work, a looping-based routing algorithm was proposed which exploits the different power consumption characteristics of the two switching states of a microring so as to minimize the power consumption of a Benes-type NoC; but this algorithm cannot provide an optical solution. In this paper, we will show the necessary and sufficient conditions for finding the optimal solution for a Benes-type NoC. We also present a new routing algorithm. Compared with the algorithm of the previous work, the new algorithm can reduce the number of microrings in the high-power-consumption state by as many as $(n - 2)\cdot 2^{n-2}$ in a $2^{n}\times 2^{n}$ Benes-type NoC for certain interconnection patterns. |
| Databáze: | OpenAIRE |
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