Prefetching in Embedded Mobile Systems Can Be Energy-Efficient
Prefetching in Embedded Mobile Systems Can Be Energy-Efficient
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DOI：
10.1109/l-ca.2011.2
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发表时间：
2011
影响因子：
2.3
通讯作者：
Jie Tang;Shaoshan Liu;Zhimin Gu;Chen Liu;J. Gaudiot
中科院分区：
文献类型：
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作者：
Jie Tang;Shaoshan Liu;Zhimin Gu;Chen Liu;J. Gaudiot
数据预取在高性能计算平台中是一种成功的技术。然而，传统观点认为它们会显著增加能耗，因此不适合嵌入式移动系统。另一方面，由于现代移动应用程序对高性能的要求越来越高，在这些系统中实现高性能技术（如预取）变得至关重要。本文研究了预取对嵌入式移动系统性能和能耗的影响。与传统观点相反，我们的研究结果表明，随着技术的进步，预取可以在提高性能的同时节能。此外，我们已经开发了一个简单而有效的分析模型，以帮助系统设计师确定能源效率的条件。
Data prefetching has been a successful technique in high-performance computing platforms. However, the conventional wisdom is that they significantly increase energy consumption, and thus not suitable for embedded mobile systems. On the other hand, as modern mobile applications pose an increasing demand for high performance, it becomes essential to implement high-performance techniques, such as prefetching, in these systems. In this paper, we study the impact of prefetching on the performance and energy consumption of embedded mobile systems. Contrary to the conventional wisdom, our findings demonstrate that as technology advances, prefetching can be energy-efficient while improving performance. Furthermore, we have developed a simple but effective analytical model to help system designers to identify the conditions for energy efficiency.