DocumentCode :
3696154
Title :
Investigating the effects of store value locality on processor power
Author :
Saman Khoshbakht;Nikitas Dimopoulos
Author_Institution :
Department of Electrical and Computer Engineering, University of Victoria, Canada
fYear :
2015
Firstpage :
338
Lastpage :
343
Abstract :
The power requirements of a single workload may vary depending on the program phase, or region. In order to monitor the power dissipation of the processor, multiple power models have been previously proposed. These models rely on the performance counters to estimate the power dissipation of the processor. To the best of our knowledge, this work is the first to investigate the effects of the value of the data being processed in the workload on power. It is shown that the power requirements of the processor correlates with the amount of bit-flips necessary to store a new value over the previous one and considering value locality can improve the power model of store performing instructions to up to 7%. This work shows the limitations of relying solely on performance counters and introduces the need to investigate the data flow of the workload in addition to the control flow, in order to achieve more precise power estimations.
Keywords :
"Radiation detectors","Benchmark testing","Instruments","Power dissipation","Data models","Power measurement","Correlation"
Publisher :
ieee
Conference_Titel :
Communications, Computers and Signal Processing (PACRIM), 2015 IEEE Pacific Rim Conference on
Electronic_ISBN :
2154-5952
Type :
conf
DOI :
10.1109/PACRIM.2015.7334858
Filename :
7334858
Link To Document :
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