Lazy Precharge: An overhead-free method to reduce precharge overhead for memory parallelism improvement of DRAM system

Zhang Tao, Cong Xu, Yuan Xie, Guangyu Sun
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引用次数: 2

Abstract

As we enter the multi-core era, the main memory becomes the bottleneck due to the exploded memory requests. In this work, we propose a novel memory architecture-Lazy Precharge (LaPRE) that enables aggressive activation schemes so that multiple rows in a bank can be activated successively without the interrupt from precharges. Therefore, LaPRE effectively reduces the precharge overhead and thus improves memory parallelism. In addition, three memory scheduling schemes are proposed correspondingly to fully make use of the improved memory parallelism. The experimental results show that LaPRE can achieve 14% performance improvement on average without hardware overhead.
惰性预充:一种减少预充开销以提高DRAM系统内存并行性的无开销方法
随着多核时代的到来,内存需求的爆炸式增长使主存成为瓶颈。在这项工作中,我们提出了一种新颖的内存架构- lazy Precharge (LaPRE),它支持主动激活方案,以便可以在不中断预充电的情况下连续激活存储库中的多行。因此,LaPRE有效地减少了预充电开销,从而提高了内存并行性。此外,为了充分利用改进后的内存并行性,提出了三种相应的内存调度方案。实验结果表明,在不增加硬件开销的情况下,LaPRE算法的性能平均提高了14%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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