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  A Parallel Priority Queue with Constant Time Operations

Brodal, G. S., Träff, J. L., & Zaroliagis, C. (1998). A Parallel Priority Queue with Constant Time Operations. Journal of Parallel and Distributed Computing, Special Issue on Parallel Data Structures, 49(1), 4-21.

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 Urheber:
Brodal, Gerth Stølting1, Autor           
Träff, Jesper Larsson1, Autor           
Zaroliagis, Christos1, Autor           
Affiliations:
1Algorithms and Complexity, MPI for Informatics, Max Planck Society, ou_24019              

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 Zusammenfassung: We present a parallel priority queue that supports the following operations in constant time: {\em parallel insertion\/} of a sequence of elements ordered according to key, {\em parallel decrease key\/} for a sequence of elements ordered according to key, {\em deletion of the minimum key element}, as well as {\em deletion of an arbitrary element}. Our data structure is the first to support multi insertion and multi decrease key in constant time. The priority queue can be implemented on the EREW PRAM, and can perform any sequence of $n$ operations in $O(n)$ time and $O(m\log n)$ work, $m$ being the total number of keys inserted and/or updated. A main application is a parallel implementation of Dijkstra's algorithm for the single-source shortest path problem, which runs in $O(n)$ time and $O(m\log n)$ work on a CREW PRAM on graphs with $n$ vertices and $m$ edges. This is a logarithmic factor improvement in the running time compared with previous approaches.

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Sprache(n): eng - English
 Datum: 2010-03-021998
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: eDoc: 517960
Anderer: Local-ID: C1256428004B93B8-B361FCC97C8B40D1C125670200693C69-Brodal1998d
 Art des Abschluß: -

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Titel: Journal of Parallel and Distributed Computing, Special Issue on Parallel Data Structures
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 49 (1) Artikelnummer: - Start- / Endseite: 4 - 21 Identifikator: ISSN: 0743-7315