skip to main content
10.1145/1228784.1228915acmconferencesArticle/Chapter ViewAbstractPublication PagesglsvlsiConference Proceedingsconference-collections
Article

Floorplan repair using dynamic whitespace management

Published: 11 March 2007 Publication History

Abstract

We describe an efficient, top-down strategy for overlap removal and floorplan repair which repairs overlaps in floorplans produced by placement algorithms or rough floorplanning methodologies. The algorithmic framework that we propose incorporates a novel geometric shifting technique within a top-down flow. The effect of our algorithm is quantified across a broad range of floorplans produced by multiple tools. Our method succeeds in producing valid placements in almost all cases; moreover, compared to leading methods, it requires only one fifth the run-time and produces placements with 4 to 13% less HPWL and up to 43% less cell movement.

References

[1]
M. D. Moffitt, A. N. Ng, I. L. Markov, and M. E. Pollack, "Constraint-driven floorplan repair," in Proc. DAC, pp. 1103--1108, July 2006.
[2]
A. R. Agnihotri, S. Ono, and P. H. Madden, "Recursive bisection placement: Feng shui 5.0 implementation details," in Proc. ISPD, pp. 230--232, 2005.
[3]
T.-C. C. Chen, T.-C. Hsu, Z.-W. Jiang, and Y.-W. Chang, "NTUplace: a ratio partitioning based placement algorithm for large-scale mixed-size designs," in Proc. ISPD, pp. 236--238, 2005.
[4]
T. F. Chan, J. Cong, J. R. Shinnerl, K. S. Sze, and M. Xie, "mPL6: Enhanced multilevel mixed-size placement," in Proc. ISPD, pp. 212--214, 2006.
[5]
J. Cong, M. Romesis, and J. R. Shinnerl, "Fast floorplanning by look-ahead enabled recursive bipartitioning," in Proc. ASPDAC, pp. 1119--1122, 2005.
[6]
B. Hu, Y. Zeng, and M. Marek-Sadowska, "mFAR: fixed-points-addition-based VLSI placement algorithm," in Proc. ISPD, pp. 239--241, April 2005.
[7]
K. Vorwerk, A. Kennings, and A. Vannelli, "Engineering details of a stable analytic placer," in Proc. ICCAD, 2004.
[8]
A. B. Kahng, S. Reda, and Q. Wang, "Aplace: a general analytic placement framework," in Proc. ISPD, pp. 233--235, 2005.
[9]
U. Brenner and J. Vygen, "Legalizing a placement with minimum total movement," TCAD, vol. 23, pp. 1597--1613, 2004.
[10]
A. N. Ng, I. L. Markov, R. Aggarwal, and V. Ramachandran, "Solving hard instances of floorplacement," in Proc. ISPD, pp. 170--177, 2006.
[11]
G.-J. Nam, "ISPD 2006 placement contest: Benchmark suite and results," in Proc. ISPD, pp. 167--167, 2006.
[12]
S. Nag and K. Chaudhary, "Post-placement residual-overlap removal with minimal movement," in Proc. DATE, 1999.
[13]
J. Cong and M. Xie, "A robust detailed placement for mixed-size IC designs," in Proc. ASPDAC, pp. 188--194, 2006.
[14]
B. A. Bell and S. K. Feiner, "Dynamic space management for user interfaces," in Proc. User Interface Soft., pp. 239--248, 2000.
[15]
M. Bernard and F. Jacquenet, "Free space modeling for placing rectangles without overlapping," J. of Universal Comp. Sci., vol. 3, no. 6, pp. 703--720, 1997.
[16]
D. Hill, "Method and system for high speed detailed placement of cells within an integrated circuit design." United States Patent 6,370,673, April 2002.
[17]
J.-M. Lin and Y.-W. Chang, "TCG-S: orthogonal coupling of P*-admissible representations for general floorplans," in Proc. DAC, pp. 842--847, 2002.
[18]
H. Murata, K. Fujiyoshi, S. Nakatake, and Y. Kajitani, "Rectangle-packing-based module placement," in Proc. ICCAD, pp. 472--479, 1995.
[19]
S. N. Adya, S. Chaturvedi, J. A. Roy, D. A. Papa, and I. L. Markov, "Unification of partitioning, placement and floorplanning," in Proc. ICCAD, pp. 550--557, 2004.
[20]
K. Vorwerk and A. Kennings, "Mixed-size placement via line search," in Proc. ICCAD, pp. 899--904, 2005.
[21]
T. Kong, "A novel net weighting algorithm for timing-driven placement," in Proc. ICCAD, pp. 172--176, 2002.
[22]
Altera Corporation, HardCopy Series Handbook, Volume 1: Section 1: HardCopy II Device Family Data Sheet.
[23]
G.-J. Nam, C. J. Alpert, P. Villarrubia, B. Winter, and M. Yildiz, "The ISPD2005 placement contest and benchmark suite," in Proc. ISPD, pp. 216--220, 2005.

Cited By

View all
  • (2008)A Robust Mixed-Size Legalization and Detailed Placement AlgorithmIEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems10.1109/TCAD.2008.92579227:8(1349-1362)Online publication date: 1-Aug-2008
  • (2007)Adaptive multiple texture approach to texture packing for 3D video gamesProceedings of the 2007 conference on Future Play10.1145/1328202.1328236(189-196)Online publication date: 14-Nov-2007

Recommendations

Comments

Information & Contributors

Information

Published In

cover image ACM Conferences
GLSVLSI '07: Proceedings of the 17th ACM Great Lakes symposium on VLSI
March 2007
626 pages
ISBN:9781595936059
DOI:10.1145/1228784
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

Sponsors

Publisher

Association for Computing Machinery

New York, NY, United States

Publication History

Published: 11 March 2007

Permissions

Request permissions for this article.

Check for updates

Author Tags

  1. VLSI
  2. floorplanning
  3. legalization
  4. placement

Qualifiers

  • Article

Conference

GLSVLSI07
Sponsor:
GLSVLSI07: Great Lakes Symposium on VLSI 2007
March 11 - 13, 2007
Stresa-Lago Maggiore, Italy

Acceptance Rates

Overall Acceptance Rate 312 of 1,156 submissions, 27%

Upcoming Conference

GLSVLSI '25
Great Lakes Symposium on VLSI 2025
June 30 - July 2, 2025
New Orleans , LA , USA

Contributors

Other Metrics

Bibliometrics & Citations

Bibliometrics

Article Metrics

  • Downloads (Last 12 months)4
  • Downloads (Last 6 weeks)1
Reflects downloads up to 27 Jan 2025

Other Metrics

Citations

Cited By

View all
  • (2008)A Robust Mixed-Size Legalization and Detailed Placement AlgorithmIEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems10.1109/TCAD.2008.92579227:8(1349-1362)Online publication date: 1-Aug-2008
  • (2007)Adaptive multiple texture approach to texture packing for 3D video gamesProceedings of the 2007 conference on Future Play10.1145/1328202.1328236(189-196)Online publication date: 14-Nov-2007

View Options

Login options

View options

PDF

View or Download as a PDF file.

PDF

eReader

View online with eReader.

eReader

Figures

Tables

Media

Share

Share

Share this Publication link

Share on social media