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VBMAR: virtual network load balanced minimal adaptive routing

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3 Author(s)
Xicheng Liu ; NCIC Joint R&D Lab., Acad. Sinica, Beijing, China ; Li, T.J. ; Wen Gao

Fully adaptive routing with less virtual channels is of technical trend in MPP interconnection network design. However imbalance of load offsets performances of many schemes. In this paper we give a fully adaptive load balanced routing algorithm cabled VBMAR. A new design tool called crossed turn model (CTM) is proposed to solve complex deadlock problems across virtual networks while keeping the load balanced. Non-deterministic finite automaton (NDFA) is used to model the routing process. The resulting algorithm features routing uniformity and channel priority concurrent architecture and parallel priority channel searching techniques are used in VBMAR router design, which make it cost efficient. Four algorithms are compared to evaluate the performance of VBMAR. Simulations show that VBMAR can considerably increase network throughput and shorten network delay under both uniform and nonuniform traffic patterns. We argue that VBMAR is a very competitive routing scheme for future commercial MPP systems

Published in:

Parallel Processing, 1999. 13th International and 10th Symposium on Parallel and Distributed Processing, 1999. 1999 IPPS/SPDP. Proceedings

Date of Conference:

12-16 Apr 1999

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