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  A lower bound for area-universal graphs

Bilardi, G., Chaudhuri, S., Dubhashi, D., & Mehlhorn, K. (1994). A lower bound for area-universal graphs. Information Processing Letters, 51, 101-105.

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Mehlhorn108.pdf (Verlagsversion), 525KB
 
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 Urheber:
Bilardi, Gianfranco1, Autor
Chaudhuri, Shiva2, Autor           
Dubhashi, Devdatt1, Autor
Mehlhorn, Kurt2, Autor           
Affiliations:
1Max Planck Society, ou_persistent13              
2Algorithms and Complexity, MPI for Informatics, Max Planck Society, ou_24019              

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 Zusammenfassung: We establish a lower bound on the efficiency of rea--universal circuits. The area A u of every graph H that can host any graph G of area (at most) A with dilation d, and congestion c p A= log log A satisfies the tradeoff A u = OmegaGamma A log A=(c 2 log(2d))): In particular, if A u = O(A) then max(c; d) = OmegaGamma p log A= log log A). 1 Introduction Bay and Bilardi [2] showed that there is a graph H which can be laid out in area O(A) and into which any graph G of area at most A can be embedded with load 1, and dilation and congestion O(log A). As a consequence, they showed the existence of an area O(A) VLSI circuit that can simulate any area A circuit with a slowdown of O(log A). This note explores the feasibility of more efficient embeddings. Our main result is Theorem 5 which establishes a limitation relating the area of a universal graph to the parameters of the embedding. Informally, it asserts that any circuit which is universal for a family of graphs of area A, a...

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Sprache(n): eng - English
 Datum: 2008-01-021994
 Publikationsstatus: Erschienen
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 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: eDoc: 344509
Anderer: Local-ID: C1256428004B93B8-D4180F9759AD181EC12570540041B4CC-Mehlhorn94e
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Titel: Information Processing Letters
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 51 Artikelnummer: - Start- / Endseite: 101 - 105 Identifikator: -