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Underclocked Software Prefetching: More Cores, Less Energy

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3 Author(s)
Md Kamruzzaman ; University of California, San Diego ; Steven Swanson ; Dean M. Tullsen

Power consumption is a concern for helper-thread prefetching that uses extra cores to speed up the single-thread execution, because power consumption increases with each additional core. This article analyzes the impact of using power-saving techniques in the context of intercore prefetching (ICP), and shows that dynamic frequency scaling coupled with ICP is a more energy-efficient way to improve the single-thread execution.

Published in:

IEEE Micro  (Volume:32 ,  Issue: 4 )