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arXiv 1502.06733cs.DC
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现实环境下MPI程序的能耗最小化

Minimizing Energy Consumption of MPI Programs in Realistic Environment

Amina Guermouche, Nicolas Triquenaux, Benoit Pradelle, William Jalby

摘要:

动态电压和频率缩放被证明是降低服务器能耗的有效方法。节能通常通过在某些程序阶段设置精心选择的频率来实现。然而,确定合适的程序阶段及其相关的最佳频率是一个复杂的问题。此外,硬件受到不可忽略的频率过渡延迟的限制。因此,提出了各种方法来确定和应用频率,但评估其效率仍然是一个问题。在本文中,我们将能量最小化问题转化为一个混合整数规划,专门模拟目前大多数硬件的限制。然后,问题解决方案估计最小能量消耗和相关联的频率调度。本文提供了两种不同的配方和讨论的可行性,他们每个人的实际应用。

英文摘要:

Dynamic voltage and frequency scaling proves to be an efficient way of reducing energy consumption of servers. Energy savings are typically achieved by setting a well-chosen frequency during some program phases. However, determining suitable program phases and their associated optimal frequencies is a complex problem. Moreover, hardware is constrained by non negligible frequency transition latencies. Thus, various heuristics were proposed to determine and apply frequencies, but evaluating their efficiency remains an issue. In this paper, we translate the energy minimization problem into a mixed integer program that specifically models most current hardware limitations. The problem solution then estimates the minimal energy consumption and the associated frequency schedule. The paper provides two different formulations and a discussion on the feasibility of each of them on realistic applications.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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