Safe and dynamic traffic rate control for networks-on-chips

Publikationstyp
Conference Paper
Date Issued
2016-08
Sprache
English
Author(s)
Kostrzewa, Adam  
Tobuschat, Sebastian  
Ernst, Rolf  
Saidi, Selma  
Institut
Eingebettete Systeme E-13  
TORE-URI
http://hdl.handle.net/11420/5818
Article Number
7579321
Citation
IEEE/ACM International Symposium on Networks-on-Chip (NOCS 2016)
Contribution to Conference
10th IEEE/ACM International Symposium on Networks-on-Chip (NOCS 2016)  
Publisher DOI
10.1109/NOCS.2016.7579321
Scopus ID
2-s2.0-84994607531
Publisher
IEEE
ISBN
978-1-4673-9030-9
978-1-4673-9031-6
Networks-on-Chip (NoCs) for real-time systems require solutions for a safe and predictable sharing of resources between transmissions with different quality-of service (QoS) requirements. In this work, we present a mechanism which allows to apply existing wormhole-switched and performance optimized NoCs in safety critical domains, without requiring complex hardware modifications. For this purpose, we introduce a global and dynamic admission control mechanism implemented in the form of an access layer, controlling the rates at which running applications can access the NoC. The mechanism allows to enforce behavioral models for different data streams as well as to dynamically adapt the rates values to the number of currently active applications. We prove this important feature using formal timing analysis. Our approach results in a higher performance and tighter guarantees while simultaneously decreasing hardware (up to 60%) and temporal overhead (up to 80%) when compared with existing solutions.
DDC Class
600: Technik