发明申请
- 专利标题： WHITESPACE CREATION AND PRESERVATION IN CIRCUIT DESIGN
- 专利标题（中）： 电路设计中的创新和保存
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申请号： US13112098申请日： 2011-05-20
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公开(公告)号： US20120297355A1公开(公告)日： 2012-11-22
- 发明人: Charles Jay Alpert , Gi-Joon Nam , Shyam Ramji , Jarrod Alexander Roy , Paul G. Villarrubia , Natarajan Viswanathan
- 申请人： Charles Jay Alpert , Gi-Joon Nam , Shyam Ramji , Jarrod Alexander Roy , Paul G. Villarrubia , Natarajan Viswanathan
- 申请人地址： US NY Armonk
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： US NY Armonk
- 主分类号： G06F17/50
- IPC分类号： G06F17/50
摘要：
A method, system, and computer program product for whitespace creation and preservation in the design of an integrated circuit (IC) are provided in the illustrative embodiments. A first estimate is formed by estimating an amount of whitespace that is needed to reduce a congestion value of a congested area of the design to a threshold value. A set of virtual filler cells is added to the congested area, wherein adding the set of virtual filler cells does not add actual whitespace cells to the congested area but reduces the congested area by at least the first estimate. A virtual filler cell in the set of virtual filler cells is replaced with a corresponding real filler cell. A determination is made whether the design has improved. A final placement solution is created when the design has not improved.