Abstract
The performance of a parallel algorithm depends in part on how well the interconnection topology of the target parallel system matches the communication patterns of the algorithm. We describe how to generate a topology for a network that can be configured into any r-regular topology. The topology generated has small total expansion with respect to a given task graph. The expansion of an edge in a task graph is the length of the shortest path that the edge maps to in the processor graph. The algorithm used to generate the topologies is analyzed and its average case behavior is determined. In addition, this synthesis method is compared to the conventional approach of mapping a task graph onto a fixed processor topology.
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