Optimal orientations of cells in slicing floorplan designs
Information and Control
A new area and shape function estimation technique for VLSI layouts
DAC '88 Proceedings of the 25th ACM/IEEE Design Automation Conference
A min-cut placement algorithm for general cell assemblies based on a graph representation
DAC '79 Proceedings of the 16th Design Automation Conference
Optimal slicing of plane point placements
EURO-DAC '90 Proceedings of the conference on European design automation
Analytical placement: A linear or a quadratic objective function?
DAC '91 Proceedings of the 28th ACM/IEEE Design Automation Conference
Parallel algorithms for slicing based final placement
EURO-DAC '92 Proceedings of the conference on European design automation
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Two new methods for efficient enumeration of slicing structures useful for macro cell and sea-of-gates final placement are presented. Contrary to existing approaches a further preorder traversal of the slicing tree is added, which allows elimination of unnecessary shapes in an early design phase. Applying this look ahead strategy, memory and computation time requirements have been reduced drastically. Better placements have been achieved by using the saved resources to enlarge the search space for enumeration.