An evaluative study on the effect of contention on message latencies in large supercomputers

@article{Bhatele2009AnES,
  title={An evaluative study on the effect of contention on message latencies in large supercomputers},
  author={Abhinav Bhatele and Laxmikant V. Kal{\'e}},
  journal={2009 IEEE International Symposium on Parallel & Distributed Processing},
  year={2009},
  pages={1-8}
}
Significant theoretical research was done on interconnect topologies and topology aware mapping for parallel computers in the 80s. With the deployment of virtual cut-through, wormhole routing and faster interconnects, message latencies reduced and research in the area died down. This paper presents a study showing that with the emergence of very large supercomputers, typically connected as a 3D torus or mesh, topology effects have become important again. It presents an evaluative study on the… CONTINUE READING
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