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  4. Multi-path scheduling for multimedia traffic in safety critical on-chip network
 
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Multi-path scheduling for multimedia traffic in safety critical on-chip network

Publikationstyp
Conference Paper
Date Issued
2016-10-01
Sprache
English
Author(s)
Kostrzewa, Adam  
Ernst, Rolf  
Saidi, Selma  
Institut
Eingebettete Systeme E-13  
TORE-URI
http://hdl.handle.net/11420/5706
Start Page
37
End Page
46
Citation
ACM/IEEE Symposium on Embedded Systems for Real-Time Multimedia, ESTIMedia 2016
Contribution to Conference
ACM/IEEE Symposium on Embedded Systems for Real-Time Multimedia, ESTIMedia 2016  
Publisher DOI
10.1145/2993452.2993563
Scopus ID
2-s2.0-84995922893
Publisher
IEEE
ISBN
978-1-4503-4543-9
978-1-5090-4163-3
Networks-on-Chip (NoCs) for contemporary multiprocessors systems must integrate complex multimedia applications which require not only high performance but also timing guarantees. However, in existing NoCs, designed for real-time systems, timing constraints are frequently implemented at the cost of decreased hardware utilization, i.e strict spatial or temporal isolation between transmissions. In this work, we propose an alternative - multi-path scheduling (MPS) - mechanism exploiting the multidimensional structure of NoCs, to combine the path selection and the temporal flow control based on the global state of the system. Consequently, MPS allows a safe sharing of NoC resources while preserving a high utilization achieved through a predictable load distribution of data traffic among different paths, reachable from source to destination. We demonstrate using benchmarks, that MPS not only provides higher average performance compared to existing solutions, but also allows to provide worst-case guarantees. We prove this important feature using formal timing analysis. Moreover, MPS induces a low implementation overhead as it can be applied to many existing wormhole-switched and performance optimized NoCs without requiring complex hardware modifications.
DDC Class
600: Technik
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