Generalized Hierarchical All-to-All Exchange Patterns

@article{Prisacari2013GeneralizedHA,
  title={Generalized Hierarchical All-to-All Exchange Patterns},
  author={Bogdan Prisacari and Germ{\'a}n Rodr{\'i}guez and Cyriel Minkenberg},
  journal={2013 IEEE 27th International Symposium on Parallel and Distributed Processing},
  year={2013},
  pages={537-547}
}
The personalized all-to-all collective exchange is one of the most challenging communication patterns in HPC applications in terms of performance and scalability. We present a framework for the design of optimized collective patterns for generic hierarchical topologies. Our proposal can be applied, among others, to two types of topologies of great importance today: (i) the family of extended generalized fat tree networks (including k-ary n-trees and their variations) which are extensively used… CONTINUE READING

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