کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4956173 1444440 2017 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synergistic design of an application-oriented sparse directory on many-core embedded systems
ترجمه فارسی عنوان
طراحی هماهنگ از دایرکتوری ناقص در برنامه کاربردی در سیستم های جاسازی شده چند هسته ای
کلمات کلیدی
سازگاری سخت افزار و نرم افزار، بسیاری از سیستم های جاسازی شده هسته، دایرکتوری ناقص درخواست گرا هزاران هسته، تخصیص برنامه پویا،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
چکیده انگلیسی
As many-core embedded systems are evolving from single-memory based designs to systems-on-a-chip running on an on-chip network, implementing a cache coherence mechanism in large-scale many-core embedded systems turns out to be a technical challenge. However, existing coherence mechanisms are difficult to scale beyond tens of cores, which require either excessive area or energy, complex hierarchical protocols, or inexact representations of sharer sets. In this paper, we present a hardware-software synergistic design of a cache coherence mechanism by considering OS-level application allocation and hardware-level coherence operations. The proposed application-oriented sparse directory (AoSD) cooperates with a contiguous allocation algorithm to isolate cache coherence traffic and thereby reduce interferences among applications. The proposed micro-architecture of sharer set representations is area-efficient; moreover, it can also be configured dynamically to track a flexible and exact sharer set. We verify our design by analyzing memory requirements of different cache organizations and implementing our design on a popular simulator Graphite to evaluate cache coherence traffic improvement. The results show that our design is both area-efficient and efficient with improvements in memory network performance by 11.74%-28.72%. It is also indicated that our design is feasible to scale up to work well in thousands-of-cores embedded systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Systems Architecture - Volume 81, November 2017, Pages 62-70
نویسندگان
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