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    Supporting Cache Coherence in Heterogeneous Multiprocessor Systems

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    git-cercs-03-15.pdf (265.7Kb)
    Date
    2003
    Author
    Suh, Taeweon
    Blough, Douglas M.
    Lee, Hsien-Hsin Sean
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    Abstract
    In embedded system-on-a-chip (SoC) applications, the need for integrating heterogeneous processors in a single chip is increasing. An important issue in integrating heterogeneous processors is how to maintain the coherence of data caches. In this paper, we propose a hardware/software methodology to make caches coherent in heterogeneous multiprocessor platforms with shared memory. Our approach works with any combination of processors that support any invalidation-based protocol. As shown in our simulations, up to 38% speedup can be achieved with a 13-cycle miss penalty at the expense of simple hardware, compared to a pure software solution. Speedup can be improved even further as the miss penalty increases. In addition, our approach provides embedded system programmers a transparent view of shared data, removing the burden of software synchronization.
    URI
    http://hdl.handle.net/1853/5933
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    • CERCS Technical Reports [193]

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