SnsBooster: Enhancing Sampling-based μArch Evaluation Efficiency through Online Performance Sensitivity Analysis

doi:10.1145/3727637

	SnsBooster: Enhancing Sampling-based μArch Evaluation Efficiency through Online Performance Sensitivity Analysis
	Han, Chenji 1,2; Zhang, Zifei 1,2; Xue, Feng 1,2; Li, Xinyu 1,2; Wu, Yuxuan 1,2; Zhang, Tingting 1,3; Liu, Tianyi 4; Guo, Qi 1; Zhang, Fuxin 1
	2025-06-01
发表期刊	ACM TRANSACTIONS ON ARCHITECTURE AND CODE OPTIMIZATION
ISSN	1544-3566
卷号	22 期号:2 页码:27
摘要	Sampling-based methods, such as SimPoint, are widely used for efficient pre-silicon mu Arch evaluations, where the costs are the number of simulation points multiplied by the number of evaluated mu Arch designs. However, these costs keep growing with an increasing number of simulation points and expanding mu Arch design space. Although techniques have been developed to accelerate the mu Arch design space exploration, less attention has been given to further reducing the simulation budget of each mu Arch evaluation. Common strategies like reducing simulation coverage or sampling fewer simulation points typically compromise estimation accuracy. Therefore, further reducing the simulation budget without compromising estimation accuracy remains a critical research problem. In this work, we propose SnsBooster to enhance sampling-based mu Arch evaluation efficiency, based on two insights: (a) large portions of simulation points' performance changes are typically insensitive to the evaluated mu Arch changes, and (b) simulation points' performance sensitivities under specific mu Arch change correlate with their inherent characteristics. By online building a mu Arch-specific performance sensitivity classifier via progressive simulation and continuous validation, SnsBooster can identify and selectively evaluate only performance-sensitive points, thus reducing the simulation budget without compromising estimation accuracy. When applied across various mu Arch changes, SnsBooster achieves an average simulation budget reduction of 39.04% with an accuracy loss of only 0.14%, compared to simulating all the sampled points. Under the same accuracy loss, SnsBooster's simulation budgets are only 64.73% and 65.60% of those required by methods of reducing simulation coverage or sampling fewer points. Besides, under identical simulation budgets, the average accuracy losses of these methods are 1.41% and 1.23%, which is substantially higher than that of SnsBooster.
关键词	Representative sampling microarchitecture-independent characteristic analysis
DOI	10.1145/3727637
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2022YFB3105100]
WOS研究方向	Computer Science
WOS类目	Computer Science, Hardware & Architecture ; Computer Science, Theory & Methods
WOS记录号	WOS:001533499400007
出版者	ASSOC COMPUTING MACHINERY
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/42081
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Han, Chenji
作者单位	1.Univ Chinese Acad Sci, Inst Comp Technol, Chinese Acad Sci, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Loongson Technol Co Ltd, Beijing, Peoples R China 4.Univ Texas San Antonio, Comp Sci, San Antonio, TX 78249 USA
推荐引用方式 GB/T 7714	Han, Chenji,Zhang, Zifei,Xue, Feng,et al. SnsBooster: Enhancing Sampling-based μArch Evaluation Efficiency through Online Performance Sensitivity Analysis[J]. ACM TRANSACTIONS ON ARCHITECTURE AND CODE OPTIMIZATION,2025,22(2):27.
APA	Han, Chenji.,Zhang, Zifei.,Xue, Feng.,Li, Xinyu.,Wu, Yuxuan.,...&Zhang, Fuxin.(2025).SnsBooster: Enhancing Sampling-based μArch Evaluation Efficiency through Online Performance Sensitivity Analysis.ACM TRANSACTIONS ON ARCHITECTURE AND CODE OPTIMIZATION,22(2),27.
MLA	Han, Chenji,et al."SnsBooster: Enhancing Sampling-based μArch Evaluation Efficiency through Online Performance Sensitivity Analysis".ACM TRANSACTIONS ON ARCHITECTURE AND CODE OPTIMIZATION 22.2(2025):27.