By Topic

Engineering details of a stable force-directed placer

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Vorwerk, K. ; Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada ; Kennings, A. ; Vannelli, A.

Analytic placement methods that simultaneously minimize wire length and spread cells are receiving renewed attention from both academia and industry. We describe the implementation details of a force-directed placer, FDP. Specifically, we provide: (1) a description of efficient force computation for spreading cells; (2) an illustration of numerical instability in these methods and a means by which these instabilities are avoided; (3) spread metrics for measuring cell distribution throughout the placement region; and (4) a complementary technique which aids in directly minimizing HPWL. We present results comparing our analytic placer to other academic tools for both standard cell and mixed-size designs. Compared to Kraftwerk and Capo 8.7, our tool produces results with an average improvement of 9% and 3%, respectively.

Published in:

Computer Aided Design, 2004. ICCAD-2004. IEEE/ACM International Conference on

Date of Conference:

7-11 Nov. 2004