一种降低DRAM系统刷新功耗的混合主存设计
发布时间：2018-11-23 17:11
【摘要】：传统计算机体系结构中主存由动态随机存取存储器(DRAM)构成,而DRAM的刷新功耗随容量的增大而急剧增大.为应对这一问题,业界开始关注新型非易失性存储器(NVM).NVM具有掉电后数据不会丢失、不需刷新的优势,然而它们仍然处于研究阶段,单颗芯片的容量和价格不足以媲美DRAM,距离大批量投入商用仍有一段距离,因此,DRAM和NVM的新型混合主存结构被认为是下一代主存.本文提出一种SignificanceAware Pages Allocation(SA-PA)混合主存设计方案,通过将关键页分配到DRAM中,非关键页分配到相变存储器(PCM)中,采用DRAM和PCM并行结构,并采用Reset-Speed技术提高PCM的写速度,从而实现在不过分降低系统性能的前提下降低系统功耗的目的.结果表明,本文提出的SA-PA混合主存结构使得系统功耗平均下降25.78%,而系统性能仅下降1.34%.
[Abstract]:In the traditional computer architecture, the main memory is composed of dynamic random access memory (DRAM), and the refresh power of DRAM increases sharply with the increase of capacity. In order to deal with this problem, the industry began to pay attention to the advantage that the new non-volatile memory (NVM). NVM has the advantage that the data will not be lost and need not be refreshed after power down, but they are still in the research stage. The capacity and price of a single chip is not comparable to that of DRAM,. Therefore, the new hybrid main memory architecture of DRAM and NVM is considered to be the next generation of main memory. In this paper, a SignificanceAware Pages Allocation (SA-PA) hybrid main memory design scheme is proposed. By allocating key pages to DRAM and non-critical pages to phase change memory (PCM), a parallel structure of DRAM and PCM is adopted. Reset-Speed technology is used to improve the write speed of PCM, so that the power consumption of the system can be reduced without excessively reducing the performance of the system. The results show that the proposed SA-PA hybrid main memory structure can reduce the power consumption of the system by 25.78, while the performance of the system only drops by 1.34.
【作者单位】： 复旦大学专用集成电路与系统国家重点实验室;
【分类号】：TP333
，
本文编号：2352184
[Abstract]:In the traditional computer architecture, the main memory is composed of dynamic random access memory (DRAM), and the refresh power of DRAM increases sharply with the increase of capacity. In order to deal with this problem, the industry began to pay attention to the advantage that the new non-volatile memory (NVM). NVM has the advantage that the data will not be lost and need not be refreshed after power down, but they are still in the research stage. The capacity and price of a single chip is not comparable to that of DRAM,. Therefore, the new hybrid main memory architecture of DRAM and NVM is considered to be the next generation of main memory. In this paper, a SignificanceAware Pages Allocation (SA-PA) hybrid main memory design scheme is proposed. By allocating key pages to DRAM and non-critical pages to phase change memory (PCM), a parallel structure of DRAM and PCM is adopted. Reset-Speed technology is used to improve the write speed of PCM, so that the power consumption of the system can be reduced without excessively reducing the performance of the system. The results show that the proposed SA-PA hybrid main memory structure can reduce the power consumption of the system by 25.78, while the performance of the system only drops by 1.34.
【作者单位】： 复旦大学专用集成电路与系统国家重点实验室;
【分类号】：TP333
，
本文编号：2352184
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