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Online Task Remapping Strategies for Fault-tolerant Network-on-Chip Multiprocessors

Additional information

Authors
Derin O., Kabakci D., Fiorin L.
Type
Article in conference proceedings
Year
2011
Language
English
Abstract
As CMOS technology scales down into the deep submicron domain, the aspects of fault tolerance in complex Networks-on-Chip (NoCs) architectures are assuming an increasing relevance. Task remapping is a software based solution for dealing with permanent failures in processing elements in the NoC. In this work, we formulate the optimal task mapping problem for mesh-based NoC multiprocessors with deterministic routing as an integer linear programming (ILP) problem with the objective of minimizing the communication traffic in the system and the total execution time of the application. We find the optimal mappings at design time for all scenarios where single-faults occur in the processing nodes. We propose heuristics for the online task remapping problem and compare their performances with the optimal solutions.
Conference proceedings
NOCS ''11: Proceedings of the Fifth ACM/IEEE International Symposium on Networks-on-Chip
Month
May
Start page number
1
End page number
8
Meeting place
Pittsburgh, Pennsylvania, USA
Keywords
adaptivity, fault tolerance, kahn process networks (KPN), mapping, network-on-chip (NoC), self-adaptivity