ERCW PRAMs and Optical Communication
نویسندگان
چکیده
This paper presents algorithms and lower bounds for several fundamental problems on the Exclusive Read, Concurrent Write Parallel Random Access Machine (ERCW PRAM) and some results for unbounded fan-in, bounded fan-out (or `BFO') circuits. Our results for these two models are of importance because of the close relationship of the ERCW model to the OCPC model, a model of parallel computing based on dynamically recon gurable optical networks, and of BFO circuits to the OCPC model with limited dynamic recon guration ability. Topics: Parallel Algorithms, Theory of Parallel and Distributed Computing.
منابع مشابه
Uniform Circuits and Exclusive Read Prams 3 (preliminary Version, January 1991)
CRCW-PRAMs can be characterized in terms of unbounded fan-in circuits. We introduce the notion of SELECT-gates. Combining this with the concept of an unambiguous circuit we are able to give a circuit equivalent of EREW-PRAMs, thus answering an open question of [SV84]. Moreover, circuits with SELECT-gates characterize CRCW-, CREW-, ERCW-, and EREW-PRAMs in a uniform manner.
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