基于忆阻器的计算存储融合体系结构研究进展

Advance in memristor-based computing storage fusion architecture

忆阻器是一种使能器件,具有阻值非易失、低功耗、高耐久度、易于集成、CMOS工艺兼容性等特性。基于忆阻器的状态逻辑计算能够实现计算和存储的真正融合,并且是逻辑完备的,从而有望突破冯·诺依曼架构的限制,有效缓解存储墙瓶颈问题。这些优异特性使得忆阻器相关研究受到学术界和工业界的极大关注。鉴于此,从忆阻器所具有的状态逻辑计算特性出发,综述面向应用的计算存储融合体系结构的研究进展。首先详细分析了状态逻辑的实现原理和改进方法;接着梳理了基于忆阻器交叉杆的状态逻辑设计,包括基本逻辑并行实现、拷贝操作和比较操作;然后概括了基于忆阻器的数据存储结构的设计原理和实现结构;在此基础上,探讨了面向应用的计算存储融合体系结构技术;最后,对该方向研究存在的问题进行了总结,并对未来的发展方向进行了展望。

Memristor is an enabling device with non-volatile resistance,low power consumption,high durability,ease of integration,and CMOS compatibility.The stateful logic of memristors can rea-lize the true fusion of computing and storage,and is complete in logic,which is expected to break the limitation of Von Neumann architecture and effectively alleviate the memory wall bottleneck.These excellent properties gain memristors great interest from academia and industry.In light of this,this paper summarizes the research progress of application-oriented computing storage fusion architecture based on stateful logic.Firstly,the implementation principle and improvement method of state logic are analyzed in detail.Secondly,the state logic design based on the memristor crossbar is reviewed,including the parallel implementation of the basic logics,copy operation and comparison operation,and then the design principle and implementation structure of the data storage structure based on the memristors are summarized.The paper then revisits an application-oriented computing storage fusion architecture in detail,and finally summarizes the problems in the research of this direction,and looks forward to the future direction.