首页> 外文会议>Supercomputing, 2005. Proceedings of the ACM/IEEE SC 2005 Conference >Just In Time Dynamic Voltage Scaling: Exploiting Inter-Node Slack to Save Energy in MPI Programs
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Just In Time Dynamic Voltage Scaling: Exploiting Inter-Node Slack to Save Energy in MPI Programs

机译:实时动态电压缩放:利用节点间的冗余以节省MPI程序中的能量

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Recently, improving the energy efficiency of HPC machines has become important. As a result, interest in using powerscalable clusters, where frequency and voltage can be dynamically modified, has increased. On power-scalable clusters, one opportunity for saving energy with little or no loss of performance exists when the computational load is not perfectly balanced. This situation occurs frequently, as balancing load between nodes is one of the long standing problems in parallel and distributed computing. In this paper we present a system called Jitter, which reduces the frequency on nodes that are assigned less computation and therefore have slack time. This saves energy on these nodes, and the goal of Jitter is to attempt to ensure that they arrive "just in time" so that they avoid increasing overall execution time. For example, in Aztec, from the ASCI Purple suite, our algorithm uses 8% less energy while increasing execution time by only 2.6%.
机译:最近,提高了HPC机器的能效变得重要。因此,使用能够动态修改频率和电压的使用功率可卡簇的兴趣增加。在电源可扩展的群集上,当计算负荷不完全平衡时,在计算负荷不完全平衡时,可以节省能源的一个机会。这种情况经常出现,因为节点之间的平衡负载是并行和分布式计算的长站点问题之一。在本文中,我们介绍了一个名为抖动的系统,这减少了分配计算较少计算的节点的频率,因此具有松弛的时间。这节省了这些节点上的能量,抖动的目标是尝试确保他们“正常”到达,以免增加整体执行时间。例如,在AZTEC中,从ASCI紫色套件中,我们的算法使用8%的能量,同时增加执行时间仅2.6%。

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