Efficient incremental analysis of on-chip power grid via sparse approximation

Published

Conference Paper

In this paper, a new sparse approximation technique is proposed for incremental power grid analysis. Our proposed method is motivated by the observation that when a power grid network is locally updated during circuit design, its response changes locally and, hence, the incremental "change" of the power grid voltage is almost zero at many internal nodes, resulting in a unique sparse pattern. An efficient Orthogonal Matching Pursuit (OMP) algorithm is adopted to solve the proposed sparse approximation problem. In addition, several numerical techniques are proposed to improve the numerical stability of the proposed solver, while simultaneously maintaining its high efficiency. Several industrial circuit examples demonstrate that when applied to incremental power grid analysis, our proposed approach achieves up to 130x runtime speed-up over the traditional Algebraic Multi-Grid (AMG) method, without surrendering any accuracy. © 2011 ACM.

Duke Authors

Cited Authors

  • Sun, P; Li, X; Ting, MY

Published Date

  • September 16, 2011

Published In

Start / End Page

  • 676 - 681

International Standard Serial Number (ISSN)

  • 0738-100X

International Standard Book Number 13 (ISBN-13)

  • 9781450306362

Citation Source

  • Scopus