A processor core for many-core with fine grained PSU and ALU cascading control

2015 Fiscal Year Final Research Report

• Project/Area Number: 25330060
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Computer system
• Research Institution: Nagoya University
• Principal Investigator: Shimada Hajime 名古屋大学, 情報基盤センター, 准教授 (60377851)
• Co-Investigator(Kenkyū-buntansha): KOBAYASHI Ryotaro 豊橋技術科学大学, 工学(系)研究科(研究院), 講師 (40324454)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: プロセッサアーキテクチャ / 低電力アーキテクチャ / 高回路面積効率アーキテクチャ

Outline of Final Research Achievements

To propose energy and area efficient processor, we explored the processor with fine grained ALU cascading (ALU-C) and pipeline stage unification (PSU). The result shows that 3-way in-order processor with ALU-C achieves close performance to 2-way out-of-order processor without PSU. Similarlly, 4-way in-order processor with ALU-C achieves close performance to 3-way out-of-order processor with less resources for out-of-order. Thus, we can achieve energy and area efficient processor only with ALU-C.

Free Research Field

計算機アーキテクチャ、情報セキュリティ