On Optimal Interconnections for VLSI
By: by Andrew B. Kahng, Gabriel Robins
Contributors: Robins, Gabriel
Series: The Springer International Series in Engineering and Computer Science, VLSI, Computer Architecture and Digital Signal Processing -- 301; Springer International Series in Engineering and Computer Science, VLSI, Computer Architecture and Digital Signal Processing -- 301.
Publisher: Springer US
Published: 1995
Place of publication: Boston, MA
Language: eng
Format: [electronic resource] /
Number of pages: 286
ISBN-13: 9781441951458; 9781475723632
Subjects: Systems engineering; Engineering; Computer-aided design; Computer engineering
Description: On Optimal Interconnections for VLSI describes, from a geometric perspective, algorithms for high-performance, high-density interconnections during the global and detailed routing phases of circuit layout. First, the book addresses area minimization, with a focus on near-optimal approximation algorithms for minimum-cost Steiner routing. In addition to practical implementations of recent methods, the implications of recent results on spanning tree degree bounds and the method of Zelikovsky are discussed. Second, the book addresses delay minimization, starting with a discussion of accurate, yet algorithmically tractable, delay models. Recent minimum-delay constructions are highlighted, including provably good cost-radius tradeoffs, critical-sink routing algorithms, Elmore delay-optimal routing, graph Steiner arborescences, non-tree routing, and wiresizing. Third, the book addresses skew minimization for clock routing and prescribed-delay routing formulations. The discussion starts with early matching-based constructions and goes on to treat zero-skew routing with provably minimum wirelength, as well as planar clock routing. Finally, the book concludes with a discussion of multiple (competing) objectives, i.e., how to optimize area, delay, skew, and other objectives simultaneously. These techniques are useful when the routing instance has heterogeneous resources or is highly congested, as in FPGA routing, multi-chip packaging, and very dense layouts. Throughout the book, the emphasis is on practical algorithms and a complete self-contained development. On Optimal Interconnections for VLSI will be of use to both circuit designers (CAD tool users) as well as researchers and developers in the area of performance-driven physical design.
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