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The interconnection design in computing clusters and data centers is expected to change significantly in the near future to sustain the increasing communication demand at controlled capitalization and operational cost. In particular, a shift from typ- ical and expensive full-bisection bandwidth interconnects (which safely cover the worst communication cases) to application oriented designs (which...
In high performance clusters current parallel application communication needs such as traffic pattern, communication volume, etc., change along time and are difficult to know in advance. Such needs often exceed or do not match available resources causing resource use imbalance, network congestion, throughput reduction and message latency increase, thus degrading the overall system performance. Studies...
Current parallel applications in parallel computing systems require an interconnection network to provide low and bounded communication delays. Communication characteristics such as traffic pattern and communication load change over time and, eventually, they may exceed available network capacity causing congestion and performance degradation. Congestion control based on adaptive routing should be...
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