题目： Energy-Efficient Error Control Methods for Nanoscale Networks-on-Chip
时间： 9月14日上午9:30 (AM9:30, 14 September, 2010, Tuesday)
地点：信电楼215会议室 浙江大学浙江省综合信息网技术重点实验室
Qiaoyan Yu received a Bachelor's degree in Communication Engineering from Xidian University of China in July 2002. Two and a half years later, she obtained a Master's degree in Communication and Information Engineering from Zhejiang University of China, where she concentrated in VLSI and Computer Architecture, especially on pipelined digital signal processor design and applications. In May 2007, she received a Master's degree in Electrical and Computer Engineering from the University of Rochester. Her Ph.D. research interests include Network-on-Chip fault tolerance mechanisms and parallel NoC simulator, VLSI reliability improvement techniques, as well as Ballistic Deflection Transistor (BDT) simulator and new logic gate design. She has published 18 IEE/IEEE/ACM journal and conference papers. She won the Best Student Paper Award in 7th IEEE International Conference on Solid-State and Integrated Circuit Technology, 2004.
Abstract
On-chip interconnect has become a power and performance bottleneck in nanoscale multi-core systems. Networks-on-chip (NoCs) have been proposed as a solution to the growing interconnect issues, offering excellent scalability and modularity. Reliability has become one of the most important metrics for communications infrastructures in nanoscale technologies - reduced supply voltages exacerbate the impact of noise sources such as particle strikes and crosstalk, which can cause transient errors in transmitted data; manufacturing defects and aging issues such as electro-migration can cause permanent errors in the communication links. In this talk, we present energy-efficient error control methods to address NoC reliability issues in a multi-layer framework. To adapt to the variable transient error rates, a configurable error control coding (ECC) scheme is proposed for data-link layer transient error management. To further improve the energy efficiency, we extend the codec configuration to network layer. The redundancy induced by transient error control is not fully used in variable noise scenarios; thus we make use of the infrequently used resources to manage permanent errors. The proposed multi-layer error control methods are evaluated with our parallel and flexible NoC simulator, showing the excellent efficiency on reliability, energy consumption and performance.