抄録
We present an ordered tree, O-tree, structure to represent non-slicing floorplans. We define an admissible placement as a compacted placement in both x and y direction. For each admissible placement, we can find an O-tree representation. We show that the number of possible O-tree combinations is O(n! 2 2n-2/n 1.5). This is very concise compared to a sequence pair representation which has O((n!) 2) combinations. The approximate ratio of sequence pair and O-tree combinations is O(n 2 (n/4e) n). The complexity of O-tree is even smaller than a binary tree structure for slicing floorplan which has O(n! 2 5n-3/n 1.5) combinations. Given an O-tree, it takes only linear time to construct the placement and its constraint graph. We have developed a deterministic floorplanning algorithm utilizing the structure of O-tree. Empirical results on MCNC benchmarks show promising performance with average 16% improvement in wire length, and 1% less in dead space over previous CPU-intensive cluster refinement method.
| 元の言語 | English |
|---|---|
| ホスト出版物のタイトル | Proceedings - Design Automation Conference |
| 出版者 | IEEE |
| ページ | 268-273 |
| ページ数 | 6 |
| 出版物ステータス | Published - 1999 |
| 外部発表 | Yes |
| イベント | Proceedings of the 1999 36th Annual Design Automation Conference (DAC) - New Orleans, LA, USA 継続期間: 1999 6 21 → 1999 6 25 |
Other
| Other | Proceedings of the 1999 36th Annual Design Automation Conference (DAC) |
|---|---|
| 市 | New Orleans, LA, USA |
| 期間 | 99/6/21 → 99/6/25 |
Fingerprint
ASJC Scopus subject areas
- Hardware and Architecture
- Control and Systems Engineering
これを引用
O-tree representation of non-slicing floorplan and its applications. / Guo, Pei Ning; Cheng, Chung Kuan; Yoshimura, Takeshi.
Proceedings - Design Automation Conference. IEEE, 1999. p. 268-273.研究成果: Chapter
}
TY - CHAP
T1 - O-tree representation of non-slicing floorplan and its applications
AU - Guo, Pei Ning
AU - Cheng, Chung Kuan
AU - Yoshimura, Takeshi
PY - 1999
Y1 - 1999
N2 - We present an ordered tree, O-tree, structure to represent non-slicing floorplans. We define an admissible placement as a compacted placement in both x and y direction. For each admissible placement, we can find an O-tree representation. We show that the number of possible O-tree combinations is O(n! 2 2n-2/n 1.5). This is very concise compared to a sequence pair representation which has O((n!) 2) combinations. The approximate ratio of sequence pair and O-tree combinations is O(n 2 (n/4e) n). The complexity of O-tree is even smaller than a binary tree structure for slicing floorplan which has O(n! 2 5n-3/n 1.5) combinations. Given an O-tree, it takes only linear time to construct the placement and its constraint graph. We have developed a deterministic floorplanning algorithm utilizing the structure of O-tree. Empirical results on MCNC benchmarks show promising performance with average 16% improvement in wire length, and 1% less in dead space over previous CPU-intensive cluster refinement method.
AB - We present an ordered tree, O-tree, structure to represent non-slicing floorplans. We define an admissible placement as a compacted placement in both x and y direction. For each admissible placement, we can find an O-tree representation. We show that the number of possible O-tree combinations is O(n! 2 2n-2/n 1.5). This is very concise compared to a sequence pair representation which has O((n!) 2) combinations. The approximate ratio of sequence pair and O-tree combinations is O(n 2 (n/4e) n). The complexity of O-tree is even smaller than a binary tree structure for slicing floorplan which has O(n! 2 5n-3/n 1.5) combinations. Given an O-tree, it takes only linear time to construct the placement and its constraint graph. We have developed a deterministic floorplanning algorithm utilizing the structure of O-tree. Empirical results on MCNC benchmarks show promising performance with average 16% improvement in wire length, and 1% less in dead space over previous CPU-intensive cluster refinement method.
UR - http://www.scopus.com/inward/record.url?scp=0032690067&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032690067&partnerID=8YFLogxK
M3 - Chapter
AN - SCOPUS:0032690067
SP - 268
EP - 273
BT - Proceedings - Design Automation Conference
PB - IEEE
ER -