OR Practice—Lagrangian Relaxation for Testing Infeasibility in VLSI Routing

Shortest Path Routing Modelling, Infeasibility and Polyhedra

The Internet is constantly growing but the available resources, i.e. bandwidth, are limited. Using bandwidth efficiently to provide high quality of service to users is referred to as traffic engineering. This is of utmost importance. Traffic in IP networks is commonly routed along shortest paths with respect to auxiliary link weights, e.g. using the OSPF or IS-IS protocol. Here, shortest path r...

Relaxation Based Electrical Simulation for VLSI Circuits

Electrical circuit simulation was one of the first CAD tools developed for IC design. The conventional circuit simulators like SPICE and ASTAP were designed initially for the cost effective analysis of circuits containing a few hundred transistors or less. A number of approaches have been used to improve the performances of congenital circuit simulators for the analysis of large circuits. There...

Design Rules in VLSI Routing

3-Dimensional VLSI Routing

Optimized Routing Methods for VLSI Placement Design

The VLSI placement problem is to place the objects into fixed die such that there are no overlaps among the objects and some cost metric such as wire length and routability is optimized. For this purpose A new routing method is used called , A Deep sub-wavelength lithography, (using the 193nm lithography to print 45nm, 32nm, and possibly 22nm integrated circuits), is one of the most fundamental...