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Clustering-based simultaneous task and voltage scheduling for NoC systems

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3 Author(s)
Yifang Liu ; Google Inc., Mountain View, CA, USA ; Yu Yang ; Jiang Hu

Networks-on-chip (NoC) is emerging as a promising communication structure, which is scalable with respect to chip complexity. Meanwhile, latest chip designs are increasingly leveraging multiple voltage-frequency domains for energy-efficiency improvement. In this work, we propose a simultaneous task and voltage scheduling algorithm for energy minimization in NoC based designs. The energy-latency tradeoff is handled by Lagrangian relaxation. The core algorithm is a clustering based approach which not only assigns voltage levels and starting time to each task (or Processing Element) but also naturally finds voltage-frequency clusters. Compared to a recent previous work, which performs task scheduling and voltage assignment sequentially, our method leads to an average of 20% energy reduction.

Published in:

Computer-Aided Design (ICCAD), 2010 IEEE/ACM International Conference on

Date of Conference:

7-11 Nov. 2010