Hierarchical pitchmatching compaction using minimum design

C. Bamji, R. Varadarajan
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引用次数: 15

Abstract

A new hierarchical compactor capable of compacting and pitchmatching hierarchically defined layouts is described. The hierarchical compactor can handle most input hierarchies, including multilevel hierarchies, over the cell routing and cell rotations and reflections. The compactor simultaneously compacts the contents of all the cells of the layout hierarchy maintaining the hierarchy of the input layout as well as the pitchmaking and abutment constraints between the cells. The hierarchical compactor automatically factors out the regularity in the layout and performs almost all of its operations on a minimum design. This novel and unique formulation of the hierarchical compaction problem enables compaction time to be a function of the irregularity rather than the size of the layout.<>
使用最小设计的分层间距匹配压实
描述了一种新的分层压缩器,能够压缩和匹配分层定义的布局。分层压缩器可以处理大多数输入层次结构,包括多层层次结构,通过单元路由和单元旋转和反射。压缩器同时压缩布局层次结构中所有单元的内容,保持输入布局的层次结构以及单元之间的沥青制作和基台约束。分层压缩器自动将布局中的规则因素剔除,并在最小设计上执行几乎所有操作。这种新颖而独特的分层压实问题的公式使压实时间成为不规则性的函数,而不是布局的大小。
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