.png){kind=icon}
返回
Increasing hardware data prefetching performance using the second-level cache
.png){kind=icon}
PRE
AI
DOI：10.1016/S1383-7621(02)00122-4.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Techniques to reduce or tolerate large memory latencies are critical for achieving high processor performance. Hardware data prefetching is one of the most heavily studied solutions, but it is essentially applied to first-level caches where it can severely disrupt processor behavior by delaying normal cache requests, inducing cache pollution and occupying the heavily used bus to the second-level cache. In this article, we show that applying hardware data prefetching to the second level cache exhibits most of the benefits of first-level cache prefetching with almost none of its drawbacks. Moreover, we outline that second-level hardware data prefetching is particularly well suited to out-of-order (OoO) processors because it can hide the long memory latencies due to second-level cache misses while OoO,execution of memory instructions can hide the lower latencies due to first-level cache misses that hit in the second-level cache. Finally, we show that when the full memory system is taken into account, especially bus traffic, first-level cache prefetching can actually degrade overall processor performance while second-level cache prefetching consistently improves overall performance. Our experimental results show that the instructions per cycle of floating-point programs (SPEC95) increases by 20% on a average using second-level cache hardware data prefetching while it decreases by 5% on a average using first-level cache hardware data prefetching. (C) 2002 Elsevier Science B.V. All rights reserved.
Keyword:
memory hierarchy
cache
superscalar processor
prefetching
bus traffic
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
4.1
论文数:
3.0K
被引数:
4.2K
机构
暂无机构信息
引用论文
Phase transition at 320 K in a new layered organic metal conductor (BEDT-TTF)4CoBr4(C6H4Cl2).png)
CrystEngComm
CrystEngCommIF0
PREAI
分享收藏分享收藏An evaluation of analysis pipelines for DNA methylation profiling using the Illumina HumanMethylation450 BeadChip platformEpigenetics
OAAI
EpigeneticsIF0
OAAI分享收藏
查看更多内容