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Video s3
    Details
    Presenter(s)
    Lianfeng Yu Headshot
    Display Name
    Lianfeng Yu
    Affiliation
    Affiliation
    Peking University
    Country
    Author(s)
    Display Name
    Lianfeng Yu
    Affiliation
    Affiliation
    Peking University
    Display Name
    Zhaokun Jing
    Affiliation
    Affiliation
    Peking University
    Display Name
    Yuchao Yang
    Affiliation
    Affiliation
    Peking University
    Display Name
    Yaoyu Tao
    Affiliation
    Affiliation
    Peking University
    Abstract

    Memristive in-memory sorting has been proposed recently to improve hardware sorting efficiency. Using iterative in-memory min computations, data movements between memory and external processing units can be eliminated for improved latency and energy efficiency. However, the bit-traversal algorithm to search the min requires a large number of column reads on memristive memory. In this work, we propose a column-skipping algorithm with help of a near-memory circuit. Redundant column reads can be skipped based on recorded states for improved latency and hardware efficiency. To enhance the scalability, we develop a multi-bank management that enables column-skipping for dataset stored in different memristive memory banks. Prototype column-skipping sorters are implemented with a 1T1R memristive memory in 40nm CMOS technology. Experimented on a variety of sorting datasets, the length-1024 32-bit column-skipping sorter with state recording of 2 demonstrates up to 4.08x speedup, 3.14x area efficiency and 3.39x energy efficiency, respectively, over the latest memristive in-memory sorting.

    Slides
    • Fast and Scalable Memristive In-Memory Sorting with Column-Skipping Algorithm (application/pdf)