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Resurrecting infeasible clock-gating functions

机译:恢复不可行的时钟门控功能

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In this paper we consider the problem of exploiting infeasible clock gating functions. Analysis of industrial designs reveals a large margin of potential for power saving based on clock gating functions that initially appear to be useless due to timing violation or excessive power consumption. We propose two optimization techniques for resurrecting such functions that can be used as a generic post-processing phase in an automatic clock gating tool. The first provides timing-aware approximation and the second aims at generating large gating domains by clustering similar clock gating functions. Our experimental results show that the combination of these two techniques yields an additional power saving of up to 78% in industrial designs.
机译:在本文中,我们考虑了利用不可行的时钟门控功能的问题。对工业设计的分析表明,基于时钟门控功能的节电潜力很大,而时钟门控功能最初由于时序违规或功耗过大而显得无用。我们提出了两种优化技术来复活这种功能,它们可以用作自动时钟门控工具中的通用后处理阶段。第一个提供时序感知的近似值,第二个目标是通过对相似的时钟门控功能进行聚类来生成大型门控域。我们的实验结果表明,这两种技术的结合在工业设计中可额外节省高达78%的功耗。

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