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Traditionally, interconnect performance is either characterized by simple topological parameters such as bisection bandwidth or studied through simulation that gives detailed performance information for the scenarios simulated. Neither of these approaches provides a good performance overview for extreme-scale interconnects. The topological parameters are not directly related to application level communication...
Slimmed fat-trees have recently been proposed and deployed to reduce costs in High Performance Computing (HPC) clusters. While existing static routing schemes such as destination-mod-k (D-mod-k) routing are load-balanced and effective for full bisection bandwidth fat-trees, they incur significant load imbalance in many slimmed fat-trees. In this work, we propose a static load balanced routing scheme,...
Fat-trees are widely adopted in HPC systems. While existing static routing schemes such as destination-mod-k (D-mod-k) routing are load-balanced and effective for full bisection bandwidth fat-trees, they are not load-balanced for many slimmed fat-trees, which have recently been suggested to reduce costs in HPC systems. In this work, we propose a load balanced routing scheme, called Round-Robin Routing...
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