On the Feasibility of Optical Circuit Switching for High Performance Computing Systems

  title={On the Feasibility of Optical Circuit Switching for High Performance Computing Systems},
  author={Kevin J. Barker and Alan F. Benner and Raymond R. Hoare and Adolfy Hoisie and Alex K. Jones and Darren J. Kerbyson and Dan Li and Rami G. Melhem and Ramakrishnan Rajamony and Eugen Schenfeld and Shuyi Shao and Craig B. Stunkel and Peter Walker},
  journal={ACM/IEEE SC 2005 Conference (SC'05)},
The interconnect plays a key role in both the cost and performance of large-scale HPC systems. The cost of future high-bandwidth electronic interconnects mushrooms due to expensive optical transceivers needed between electronic switches. We describe a potentially cheaper and more power-efficient approach to building high-performance interconnects. Through empirical analysis of HPC applications, we find that the bulk of inter-processor communication (barring collectives) is bounded in degree and… CONTINUE READING
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