LORAX: Loss-Aware Approximations for Energy-Efficient Silicon Photonic Networks-on-Chip
LORAX: Loss-Aware Approximations for Energy-Efficient Silicon Photonic Networks-on-Chip
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DOI：
10.1145/3386263.3406919
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发表时间：
2020-02
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通讯作者：
Febin P. Sunny;Asif Mirza;Ishan G. Thakkar;S. Pasricha;M. Nikdast
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作者：
Febin P. Sunny;Asif Mirza;Ishan G. Thakkar;S. Pasricha;M. Nikdast
近似计算范式提倡放松应用程序的精度目标，以提高能效和性能。最近，这种范例已经被探索以提高硅光子片上网络（PNoCs）的能量效率。在本文中，我们提出了一种新的框架（LORAX），使更积极的近似在PNoCs的硅光子链路通信。这是第一项考虑损耗感知激光功率管理和多级信令以实现PNoC中有效的数据近似和能量效率的工作。仿真结果表明，对于相同的应用输出质量，我们的框架可以实现高达31.4%的激光器功耗降低和高达12.2%的能源效率比PNoCs中的近似通信的最佳已知的先前工作。
The approximate computing paradigm advocates for relaxing accuracy goals in applications to improve energy-efficiency and performance. Recently, this paradigm has been explored to improve the energy efficiency of silicon photonic networks-on-chip (PNoCs). In this paper, we propose a novel framework (LORAX) to enable more aggressive approximation during communication over silicon photonic links in PNoCs. This is the first work that considers loss-aware laser power management and multilevel signaling to enable effective data approximation and energy-efficiency in PNoCs. Simulation results show that our framework can achieve up to 31.4% lower laser power consumption and up to 12.2% better energy efficiency than the best known prior work on approximate communication in PNoCs, for the same application output quality.