English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

International audienceLegalization is one of the most critical steps in modern placement designs. Since several objectives like wirelength, routability, or temperature are already optimized in global placement stage, the objective of legalization is not only to align the cells overlap-free to the rows, but also to preserve the solution of global placement, i.e., the displacement of cells needs to be minimized. However, minimizing displacement only is not enough for current timing-driven SoC designs. Blind displacement minimization may increase the half-perimeter wirelength (HPWL) of nets significantly that degrades the chip performance. In this paper, we propose a fast legalization algorithm for standard cell placement with simultaneous wirelength and displacement minimization. The main contributions of our work are: (1) a fast row selection technique by using k-medoid clustering approach; (2) an exact linear wirelength model to minimize both wirelength and total displacement; (3) a constant time approach to determine the median in trial placement stage. Compared with the state-of-the-art legalization algorithms, experimental results show that our legalizer acquires much better achievement in terms of HPWL, total and maximum displacements, and running time on legalized NTUplace3 global placement results on both ISPD 2005 and 2006 placement contest benchmarks

Fast Legalization for Standard Cell Placement with Simultaneous Wirelength and Displacement Minimization