Mobile CPU's rise to power: Quantifying the impact of generational mobile CPU design trends on performance, energy, and user satisfaction
Mobile CPU's rise to power: Quantifying the impact of generational mobile CPU design trends on performance, energy, and user satisfaction
复制标题
DOI：
10.1109/hpca.2016.7446054
复制
发表时间：
2016-03
期刊：
影响因子：
--
通讯作者：
Matthew Halpern;Yuhao Zhu;V. Reddi
中科院分区：
文献类型：
--
作者：
Matthew Halpern;Yuhao Zhu;V. Reddi
在本文中，我们评估了移动CPU设计的过去，现在和未来。我们研究移动CPU设计趋势如何影响最终用户，硬件设计和整体移动设备。我们分析了过去七年中通常发布的尖端移动CPU设计的演变。具体而言，我们报告了移动CPU代的测量绩效，功率，能源和用户满意度趋势。我们工作的一个关键贡献是，我们将移动CPU的进化与用户满意度相关，这在很大程度上是从先前的移动硬件研究中不存在的。为了弥合移动CPU设计和用户满意度之间的差距，我们构建并进行了一项新颖的众包研究，使用亚马逊机械Turk服务跨越了25,000多名调查参与者。我们的方法使我们能够确定哪种移动CPU设计技术为最终用户的用户体验质量提供了最大的好处。我们的结果定量表明，CPU在现代移动系统（SOCS）中起着至关重要的作用。在过去的七年中，单一和多核心性能的改进都通过减少用户关键的应用程序响应潜伏期来促进最终用户满意度。移动CPU积极采用许多渴望台式台式机的设计技术，以达到这些性能水平。与其他智能手机组件（例如显示和无线电）的峰值功耗随着时间的推移有所下降不同，移动CPU的峰值功耗稳步增加。随着技术缩放的限制限制了类似台式机的移动CPU的能力，专门的加速器似乎是一种有希望的替代方案，可以帮助维持移动计算所需的功率，性能和能量改进。这样的范式转变将重新定义CPU在未来的SOC中的作用，这基于我们的发现值得一些设计考虑。
In this paper, we assess the past, present, and future of mobile CPU design. We study how mobile CPU designs trends have impacted the end-user, hardware design, and the holistic mobile device. We analyze the evolution often cutting-edge mobile CPU designs released over the past seven years. Specifically, we report measured performance, power, energy and user satisfaction trends across mobile CPU generations. A key contribution of our work is that we contextualize the mobile CPU's evolution in terms of user satisfaction, which has largely been absent from prior mobile hardware studies. To bridge the gap between mobile CPU design and user satisfaction, we construct and conduct a novel crowdsourcing study that spans over 25,000 survey participants using the Amazon Mechanical Turk service. Our methodology allows us to identify what mobile CPU design techniques provide the most benefit to the end-user's quality of user experience. Our results quantitatively demonstrate that CPUs play a crucial role in modern mobile system-on-chips (SoCs). Over the last seven years, both single-and multicore performance improvements have contributed to end-user satisfaction by reducing user-critical application response latencies. Mobile CPUs aggressively adopted many power-hungry desktop-oriented design techniques to reach these performance levels. Unlike other smartphone components (e.g. display and radio) whose peak power consumption has decreased over time, the mobile CPU's peak power consumption has steadily increased. As the limits of technology scaling restrict the ability of desktop-like scaling to continue for mobile CPUs, specialized accelerators appear to be a promising alternative that can help sustain the power, performance, and energy improvements that mobile computing necessitates. Such a paradigm shift will redefine the role of the CPU within future SoCs, which merit several design considerations based on our findings.