一种高效的混合内存布局机制与编码技术

发布时间：2019-08-12 15:05

【摘要】：随着大数据和多核技术的发展,传统内存技术的发展已经远远不能满足大量数据密集型应用涌现所催生的内存计算需求。近年来,新型非易失性存储器(NVM)的兴起与发展为打破传统内存技术瓶颈提供了契机。相变存储器(PCM)作为一种典型的新型非易失性存储器(NVM),与传统内存DRAM各有优势,被认为是最有可能代替传统内存DRAM的存储器,在内存应用中具有很好的发展前景。基于DRAM和PCM的混合内存使得同时发挥DRAM与PCM各自的优势成为可能,故提出一种DRAM与PCM混合内存架构,设计针对混合内存布局的高效读写策略及数据迁移机制,并且在混合内存系统中应用纠删码来提高系统的可靠性。实验表明,此混合内存系统能够大大减少能耗,提高数据吞吐量,同时保证读写的可靠性。
[Abstract]:With the development of big data and multicore technology, the development of traditional memory technology is far from meeting the memory computing requirements caused by the emergence of a large number of data-intensive applications. In recent years, the rise and development of new non-volatile memory (NVM) provides an opportunity to break the bottleneck of traditional memory technology. Phase change memory (PCM), as a typical new type of non-volatile memory (NVM), and traditional memory DRAM, has its own advantages. It is considered to be the most likely memory to replace traditional memory DRAM, and has a good development prospect in memory applications. The hybrid memory based on DRAM and PCM makes it possible to give full play to the advantages of DRAM and PCM at the same time. Therefore, a hybrid memory architecture of DRAM and PCM is proposed, which designs an efficient reading and writing strategy and data migration mechanism for hybrid memory layout, and applies erasure code in hybrid memory system to improve the reliability of the system. The experimental results show that the hybrid memory system can greatly reduce energy consumption, improve data throughput and ensure the reliability of reading and writing.
【作者单位】：中国人民解放军理工大学指挥信息系统学院;
【基金】：国家自然科学基金项目(61402518)资助
【分类号】：TP333

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