Power Management of Extreme-Scale Networks with On/Off Links in Runtime Systems

@article{Totoni2015PowerMO,
  title={Power Management of Extreme-Scale Networks with On/Off Links in Runtime Systems},
  author={Ehsan Totoni and Nikhil Jain and Laxmikant V. Kal{\'e}},
  journal={TOPC},
  year={2015},
  volume={1},
  pages={16:1-16:21}
}
Networks are among major power consumers in large-scale parallel systems. During execution of common parallel applications, a sizeable fraction of the links in the high-radix interconnects are either never used or are underutilized. We propose a runtime system based adaptive approach to turn off unused links, which has various advantages over the previously proposed hardware and compiler based approaches. We discuss why the runtime system is the best system component to accomplish this task… CONTINUE READING