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System Development & Application
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3701-3705,3712

Improvement study on recovery method of RAT in superscalar processors

Yang Sibo1
Li Weiheng1
Yu Dunshan1
Zu Jingzhao2
Li Shiping2
1. School of Software & Microelectronics, Peking University, Beijing 102600, China
2. Jiangsu Huachuang Microsystem Co. Ltd. , Nanjing 210000, China

Abstract

Register renaming is a critical component of modern superscalar processor to exploit the instruction level parallelism, the foundation of it is to record the mappings between logical registers and physical registers in the RAT. If the branch prediction is error, the RAT needs to recover to the status at the branch. The commonly used recovery methods don't take advantage of the locality of renaming, as instruction window size increases, all of them exposit the problem of too costly. This paper proposed a region-based rename recovery method, by modify the walk method, used region scoreboards to determine the range of addresses to be scanned, and precisely controlled the scan process in each region, resource waste could be greatly reduced. Through the analysis of synthesis and performance reports, this method's performance is close to the traditional checkpoint recovery method with much less area and power, and has better expansion potential.

Foundation Support

军队科研资助项目

Publish Information

DOI: 10.19734/j.issn.1001-3695.2022.04.0222
Publish at: Application Research of Computers Printed Article, Vol. 39, 2022 No. 12
Section: System Development & Application
Pages: 3701-3705,3712
Serial Number: 1001-3695(2022)12-027-3701-05

Publish History

[2022-07-20] Accepted Paper
[2022-12-05] Printed Article

Cite This Article

杨思博, 黎炜桁, 于敦山, 等. 超标量处理器中寄存器别名表恢复方法的改进研究 [J]. 计算机应用研究, 2022, 39 (12): 3701-3705,3712. (Yang Sibo, Li Weiheng, Yu Dunshan, et al. Improvement study on recovery method of RAT in superscalar processors [J]. Application Research of Computers, 2022, 39 (12): 3701-3705,3712. )

About the Journal

  • Application Research of Computers Monthly Journal
  • Journal ID ISSN 1001-3695
    CN  51-1196/TP

Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

Aiming at the urgently needed cutting-edge technology in this discipline, Application Research of Computers reflects the mainstream technology, hot technology and the latest development trend of computer application research at home and abroad in a timely manner. The main contents of the journal include high-level academic papers in this discipline, the latest scientific research results and major application results. The contents of the columns involve new theories of computer discipline, basic computer theory, algorithm theory research, algorithm design and analysis, blockchain technology, system software and software engineering technology, pattern recognition and artificial intelligence, architecture, advanced computing, parallel processing, database technology, computer network and communication technology, information security technology, computer image graphics and its latest hot application technology.

Application Research of Computers has many high-level readers and authors, and its readers are mainly senior and middle-level researchers and engineers engaged in the field of computer science, as well as teachers and students majoring in computer science and related majors in colleges and universities. Over the years, the total citation frequency and Web download rate of Application Research of Computers have been ranked among the top of similar academic journals in this discipline, and the academic papers published are highly popular among the readers for their novelty, academics, foresight, orientation and practicality.


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