Characterization and exploitation of narrow-width loads: the narrow-width cache approach
Characterization and exploitation of narrow-width loads: the narrow-width cache approach
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窄宽度负载的表征和利用：窄宽度缓存方法
DOI：
10.1145/1878921.1878955
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
P. Stenström
中科院分区：
文献类型：
--
作者：
M. Islam;P. Stenström
本文利用小值局部性来加速内存指令的执行。我们发现，窄宽度负载（NWLDs）-负载与8位或更少的小值操作数---包括26%的所有执行负载在40个应用程序的SPEC基准套件。我们建立了NWLD的频率几乎与编译器和输入数据无关。我们引入窄宽度缓存（NWC）缓存小值内存字。NWC为几个内存密集型应用程序提供了显著的加速，而芯片面积开销可以忽略不计。NWC还降低了整体能量耗散和存储器流量。
This paper exploits small-value locality to accelerate the execution of memory instructions. We find that narrow-width loads (NWLDs) --- loads with small-value operands of 8 bits or less --- comprise 26% of all executed loads across 40 applications of the SPEC benchmark suites. We establish that the frequency of NWLDs are almost independent of compiler and input data. We introduce narrow-width caches (NWC) to cache small-value memory words. NWCs provide a significant speedup for several memory-intensive applications with a negligible chip-area overhead. NWCs also reduce the overall energy dissipation and memory traffic.