DocumentCode :
3543815
Title :
Power analysis of link level and end-to-end data protection in networks on chip
Author :
Jantsch, Axel ; Lauter, Robert ; Vitkowski, Arseni
Author_Institution :
R. Inst. of Technol., Stockholm, Sweden
fYear :
2005
fDate :
23-26 May 2005
Firstpage :
1770
Abstract :
We provide a power analysis for the communication in the Nostrum NoC concluding that power consumption is dominated by the links between switches while the switches and network interfaces contribute with a mere few percent to the power consumption. Further, we analyze link level low power encoding techniques with the conclusion that they spend several times more power than no encoding at all, if normalized for the same performance, which is done by adjusting supply voltage and frequency. Data protection schemes also have the potential to reduce power if voltage levels can be reduced and certain faults can be tolerated. We experiment with link level and end-to-end data protection schemes. They only moderately increase power consumption and have indeed the potential to save power. However, this potential strongly depends on the application traffic patterns and fault models of future technology generations.
Keywords :
error correction codes; fault tolerance; integrated circuit interconnections; multiprocessor interconnection networks; network interfaces; system buses; NoC communication; end-to-end data protection; error protection codes; fault tolerant codes; inter-switch links; link level bus encoding; link level data protection; low power encoding; network interfaces; network level bus encoding; networks on chip power analysis; power consumption; traffic patterns; Communication switching; Encoding; Energy consumption; Frequency; Network interfaces; Network-on-a-chip; Performance analysis; Protection; Switches; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
Type :
conf
DOI :
10.1109/ISCAS.2005.1464951
Filename :
1464951
Link To Document :
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