Adaptive Routing in Multicomputer Networks
1989
Multicomputer Networks Message-passing concurrent computers, more commonly known as multicomputers, such as the Caltech Cosmic Cube [1] and its commercial descendents, consist of many computing nodes that interact with each other by sending and receiving messages over communication channels between the nodes [2]. The existing communication networks of the second-generation machines such as the Ametek 2010 employ an oblivious wormhole routing technique [6,7] which guarantees deadlock freedom. The network performance of these highly evolved oblivious techniques have reached a limit of being as fast as physically possible while capable of delivering, under random traffic, a stable maximum sustained throughput of ≈ 45 to 50% of the limit set by the network bisection bandwidth. Any further improvements on these networks will require an adaptive utilization of available network bandwidth to diffuse local congestions.
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