Evaluation of X Architecture Using Interconnect Length Distribution

Hidenari NAKASHIMA, Naohiro TAKAGI, Junpei INOUE, Kenichi OKADA, Kazuya MASU

Summary :

In this paper, we propose a new Interconnect Length Distribution (ILD) model to evaluate X architecture. X architecture uses 45-wire orientations in addition to 90-wire orientations, which contributes to reduce the total wire length and the number of vias. In this paper, we evaluated interconnect length distribution of diagonal (45orientations) and all-directional wiring. The average length and the longest length of interconnect are estimated, and 18% reduction in power consumption and 17% improvement in clock frequency can be obtained by the diagonal wiring in the experimental results. The all-directional wiring does not have large advantage as compared the diagonal wiring.

• Publication: IEICE TRANSACTIONS on Fundamentals Vol.E88-A No.12 pp.3437-3444
• Publication Date: 2005/12/01
• DOI: 10.1093/ietfec/e88-a.12.3437
• Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
• Category: Interconnect

Authors

Hidenari NAKASHIMA
Naohiro TAKAGI
Junpei INOUE
Kenichi OKADA
Kazuya MASU

Keyword

X architecture,  interconnect length distribution,  ILD,  Rent's rule,  all-directional interconnect