Routing Congestion in VLSI Circuits: Estimation and Optimization - Integrated Circuits and Systems Softcover reprint of hardcover 1st ed. 2007 edition

Marc Notes: Originally published: 2007.; Includes bibliographical references and index.;'Routing Congestion in VLSI Circuits' provides an understanding of the root causes of routing congestion in VLSI circuits, techniques for estimating & optimizing this congestion, & a critical analysis of the accuracy & effectiveness of these techniques. Jacket Description/Back: With the dramatic increases in on-chip packing densities, routing congestion has become a major problem in chip design. The problem is especially acute as interconnects are also the performance bottleneck in integrated circuits. The solution lies in judicious resource management. This involves intelligent allocation of the available interconnect resources, up-front planning of the wire routes for even wire distributions, and transformations that make the physical synthesis flow congestion-aware. Routing Congestion in VLSI Circuits: Estimation and Optimization provides the reader with a complete understanding of the root causes of routing congestion in present-day and future VLSI circuits, available techniques for estimating and optimizing this congestion, and a critical analysis of the accuracy and effectiveness of these techniques, so that the reader may prudently choose an approach that is appropriate to their design goals. The scope of the work includes metrics and optimization techniques for routing congestion at various stages of the VLSI design flow, including the architectural level, the logic synthesis/technology mapping level, the placement phase, and the routing step. A particular focus of this work is on the congestion issues that deal primarily with standard cell based design. Routing Congestion in VLSI Circuits: Estimation and Optimization is a valuable reference for CAD developers and researchers, design methodology engineers, VLSI design and CAD students, and VLSI design engineers. Description for Sales People: This volume provides the reader with a complete understanding of the fundamental causes of routing congestion in present-day and next-generation VLSI circuits, techniques for estimating and relieving congestion, and a critical analysis of the accuracy and effectiveness of these techniques. Readers are supplied with the knowledge to prudently choose an approach that is appropriate to their design goals. The book includes metrics and optimization techniques for routing congestion at various stages of the VLSI design flow, including the architectural level, the logic synthesis/technology mapping level, the placement phase, and the routing phase. The subjects covered include an explanation of why the problem of congestion is important and how it will trend, plus definitions of metrics that are appropriate for measuring congestion, and descriptions of techniques for estimating and optimizing routing congestion issues in cell-/library-based VLSI circuits. Table of Contents: The Origins of Congestion.- An Introduction to Routing Congestion.- The Estimation of Congestion.- Placement-level Metrics for Routing Congestion.- Synthesis-level Metrics for Routing Congestion.- The Optimization of Congestion.- Congestion Optimization During Interconnect Synthesis and Routing.- Congestion Optimization During Placement.- Congestion Optimization During Technology Mapping and Logic Synthesis.- Congestion Implications of High Level Design. Publisher Marketing: With dramatic increases in on-chip packing densities, routing congestion has become a major problem in integrated circuit design, impacting convergence, performance, and yield, and complicating the synthesis of critical interc- nects. The problem is especially acute as interconnects are becoming the performance bottleneck in modern integrated circuits. Even with more than 30% of white space, some of the design blocks in modern microprocessor and ASIC designs cannot be routed successfully. Moreover, this problem is likely to worsen considerably in the coming years due to design size and technology scaling. There is an inherent tradeo? between choosing a minimum delay path for interconnect nets, and the need to detour the routes to avoid tra?c jams; congestion management involves intelligent allocation of the available int- connect resources, up-front planning of the wire routes for even distributions, and transformations that make the physical synthesis ?ow congestion-aware. The book explores this tradeo? that lies at the heart of all congestion m- agement, in seeking to address the key question: how does one optimize the traditional design goals such as the delay or the area of a circuit, while still ensuring that the circuit remains routable? It begins by motivating the c- gestion problem, explaining why this problem is important and how it will trend. It then progresses with comprehensive discussions of the techniques available for estimating and optimizing congestion at various stages in the design ?ow."