Abstract
The performance of interconnection networks is significantly affected by router speed and routing adaptivity, which can be competing factors. To achieve a high-speed, true-fully-adaptive router design, this paper explores the exploitation of dynamic routing behavior identified as routing locality. When routing locality is exploited, it enables the internal crossbar of a router to be partitioned into smaller and faster units without sacrificing true-fully-adaptive routing capabilities. Extensive evaluation of partitioned crossbar designs which exploit routing locality shows that the increased adaptivity offered by deadlock recovery-based routing algorithms can be implemented in routers without sacrificing router speed. The partitioned crossbar designs reduce average message latency by up to 65% and increase maximum network throughput by up to 51%.
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