Error control schemes for on-chip communication links: the energy-reliability tradeoff
Error control schemes for on-chip communication links: the energy-reliability tradeoff
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DOI：
10.1109/tcad.2005.847907
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发表时间：
2005-05
影响因子：
2.9
通讯作者：
D. Bertozzi;L. Benini;G. Micheli
中科院分区：
文献类型：
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作者：
D. Bertozzi;L. Benini;G. Micheli
未来片上系统（SoC）的片上互连网络将不得不处理全局线路对噪声源（如串扰或电源噪声）日益增加的敏感性。因此，瞬态延迟和逻辑故障可能会降低跨芯片通信的可靠性。考虑到降低SoC的功耗预算，在本文中，我们开发了结合能量最小化和通信可靠性控制的解决方案。冗余总线编码被证明是一种有效的技术，权衡能源对可靠性，使最有效的方案可以被选择，以满足预定义的可靠性要求，在低信噪比制度。我们模拟片上互连噪声信道和评估的影响，两个错误恢复方案的能源效率：在接收机阶段与损坏的数据重传的校正。分析是在一个现实的SoC设置，并保持共享的通信资源和对等网络中的互连链路。我们为SoC设计人员提供了为通信架构选择节能错误控制方案的指南。
On-chip interconnection networks for future systems on chip (SoC) will have to deal with the increasing sensitivity of global wires to noise sources such as crosstalk or power supply noise. Hence, transient delay and logic faults are likely to reduce the reliability of across-chip communication. Given the reduced power budgets for SoCs, in this paper, we develop solutions for combined energy minimization and communication reliability control. Redundant bus coding is proved to be an effective technique for trading off energy against reliability, so that the most efficient scheme can be selected to meet predefined reliability requirements in a low signal-to-noise ratio regime. We model on-chip interconnects as noisy channels and evaluate the impact of two error recovery schemes on energy efficiency: correction at the receiver stage versus retransmission of corrupted data. The analysis is performed in a realistic SoC setting, and holds both for shared communication resources and for peer-to-peer links in a network of interconnects. We provide SoC designers with guidelines for the selection of energy efficient error-control schemes for communication architectures.