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We examine various issues related to large-scale parallel architectures. Specifically, the use of barriers for fine-grained data coordination and for improving communication performance. We describe… (More)
The primary performance measure of a routing network is the graph of bandwidth achieved for a given latency. At low loads, latency increases with increasing bandwidth utilization. As the load… (More)
In bandwidth limited computers, such as meshes and tori, it is important to achieve high bandwidth across the bisection. Traditional techniques achieve bandwidth in the range of 30–70%. We show how… (More)