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Parallel matrix algorithms on a broadcast-based architecture

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4 Author(s)
Katsinis, C. ; Dept. of Electr. & Comput. Eng., Drexel Univ., Philadelphia, PA, USA ; Hecht, D. ; Ming Zhu ; Narravula, H.

Summary form only given. Due to advances in fiber-optics and VLSI technology, interconnection networks which allow multiple simultaneous broadcasts are becoming feasible. This paper summarizes one such multiprocessor architecture called the Simultaneous Optical Multiprocessor Exchange Bus (SOME-Bus). It also presents the design of the network interface and the cache and directory controllers which support cache block combining, capture and prefetch and allow complete overlap of processing time with the communication time due to compulsory misses. The paper uses two fundamental matrix algorithms to characterize the architecture performance. Cache miss analysis and results from the execution of these programs on a SOME-Bus simulator show that block capture and prefetch combined with an effective block replacement policy succeed in significantly reducing the miss rate due to compulsory misses as the cache size increases, while a similar increase of cache size in traditional architectures leaves the miss rate due to compulsory misses unaffected.

Published in:

Parallel and Distributed Processing Symposium, 2004. Proceedings. 18th International

Date of Conference:

26-30 April 2004

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