An Artificial Intelligence Approach to Integrated Circuit - download pdf or read online

By Marwan A. Jabri

ISBN-10: 3540539581

ISBN-13: 9783540539582

ISBN-10: 3642844898

ISBN-13: 9783642844898

In 1984, whereas i used to be following his postgraduate direction on VLSI layout, my manager Dr. David Skellern, requested me if i used to be attracted to investigating clever ways to computerized Ie floorplanning. He informed me then: "a circuit that works continually appears to be like great, has a shrewdpermanent facts and keep watch over circulation. a quick technique to examine scholars' Ie initiatives is by way of their fioorplans.". Later, I took a direction on wisdom Engineering (KE) and synthetic Intelligence (AI) with Professor John Gero, who inspired me to enquire this region of layout automation. The assets for such improvement have been relatively negative at IS&E as KE was once a comparatively new box of analysis in Australia at the moment. \'Vhatever the problems (a stable programmmer by no means blames his instruments as David Skellern used to inform me), I undertook the research of Knowledge-Based ways to Ie ftoor­ making plans as my PhD thesis topic with assistance from my manager and John Gero and the encouragement of all researchers at IS&E , who supplied a thrilling atmosphere for my examine. This quantity reviews the result of my learn in the course of 1984, 1985, 1986, and 1987. The voulme bargains with Ie ftoorplanning from 4 views: floorplanning method, wisdom Engineering within the Ie area, the advance of knowledge-based fioorplan­ ning strategies and new floorplanning algorithms to be used within the total strategy.

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Block Adjacency Affinity: Describes the affinity of a block to its neighbourhood. It is evaluated from the product of the rough area estimate and communication density. The object attributes are involved in a wide range of heuristics including those related to the creation of an RACG, where much of the concern is on the use of graph transformation techniques based upon the use of passthrough and wiring-blocks. These heuristics are well expressed in the form of transformation rules, which are applied to the original circuit description and the inference is halted once an RACG description appears.

Constitute the constraints that are subject to optimisation to satisfy human needs. This dynamic priority assignment to design constraints reflects the sensitivity of the search process to dynamic strategic alterations, generally resulting from decisions based on rules of thumb or heuristics. Humans generally use such heuristics when they recognise in the description of the problem they are solving a pattern (or schemata [63]) that matches a familiar situation that they have met or solved and they have memorised (learned) the corresponding problem solving techniques (consequences).

It is only through an exhaustive "generate and test" technique that its existence would be known. Of course multiple solutions may exist. Phase 3: Determination of the Satisfying Shapes With the RDG found, the PPP then finds the appropriate shape for the blocks. To do so, a set of cost equations for the X and Y directions are set up independently. The variables in these equations are the width and height of each block. A set of constraints is also set up according to the minimal sizes of borders required to pass the interconnections (the weights on the edges of the POG).

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An Artificial Intelligence Approach to Integrated Circuit Floorplanning by Marwan A. Jabri


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