DocumentCode :
1902763
Title :
Arbitration and routing impact on NoC design
Author :
Moreno, Edson I. ; Marcon, Cesar A M ; Calazans, Ney L V ; Moraes, Fernando G.
Author_Institution :
Fac. of Inf., PUCRS, Porto Alegre, Brazil
fYear :
2011
fDate :
24-27 May 2011
Firstpage :
193
Lastpage :
198
Abstract :
The increasing number of processing elements packed inside integrated circuits requires communication architectures such as a Networks-on-Chip (NoCs) to deal with scalability, bandwidth and energy consumption goals. Many different NoC architectures have been proposed, and several experiments reveal that routing and arbitration schemes are key design features for NoC performance. Therefore, this work proposes a routing scheme called planned source routing, which is implemented in a NoC architecture with distributed arbitration called Hermes-SR. The paper compares Hermes-SR to the Hermes NoC that employs distinct arbitration and routing mechanisms and algorithms. One set of experiments enables to confront design time planned source routing and runtime distributed routing. Additionally, the paper presents the advantages of using deadlock free adaptive routing algorithms as basis for balancing the overall communication load in both routing mechanisms. Another experiment reveals the tradeoffs between using centralized or distributed arbitration. A last evaluation exposes the performance advantages of combining distributed arbiters with planned source routing. Results enforce that design time planned source routing tends to avoid NoC congestion and contributes for average latency reduction, while distributed arbitration optimizes NoC saturation figures.
Keywords :
integrated circuit design; network routing; network-on-chip; Hermes-SR; NoC design; centralized arbitration scheme; deadlock free adaptive routing algorithms; design time planned source routing; distributed arbitration scheme; energy consumption; integrated circuits; networks-on-chip; routing impact scheme;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Rapid System Prototyping (RSP), 2011 22nd IEEE International Symposium on
Conference_Location :
Karlsruhe
ISSN :
Pending
Print_ISBN :
978-1-4577-0658-5
Electronic_ISBN :
Pending
Type :
conf
DOI :
10.1109/RSP.2011.5929995
Filename :
5929995
Link To Document :
بازگشت