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Exploration of GPGPU Register File Architecture Using Domain-wall-shift-write based Racetrack Memory

Published: 01 June 2014 Publication History

Abstract

SRAM based register file (RF) is one of the major factors limiting the scaling of GPGPU. In this work, we propose to use the emerging nonvolatile domain-wall-shift-write based racetrack memory (DWSW-RM) to implement a power-efficient GPGPU RF, of which the power consumption is substantially reduced. A holistic technology set is developed to minimize the high access cost of DWSW-RW caused by the sequential access mechanism. Experiment results show that our proposed techniques can improve the GPGPU performance by 4.6% compared to the baseline with SRAM based RF. The RF energy efficiency is also significantly improved by 2.45×.

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    DAC '14: Proceedings of the 51st Annual Design Automation Conference
    June 2014
    1249 pages
    ISBN:9781450327305
    DOI:10.1145/2593069
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than the author(s) must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected].

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    Published: 01 June 2014

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    Author Tags

    1. Domain-wall
    2. GPGPU
    3. Racetrack memory
    4. Register file

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