About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
DAC 2003
Conference paper
Power grid reduction based on algebraic multigrid principles
Abstract
With the scaling of technology, power grid noise is becoming increasingly significant for circuit performance. A typical power grid circuit contains millions of linear elements, making noise analysis and verification challenging in terms of both run time and memory. We propose a power grid reduction scheme based on algebraic multigrid principles, in which the coarser-level grid and the restriction operators are constructed automatically from the circuit matrices. This method is suitable for large-scale power grid transient and AC analysis. Experimental results show an order of magnitude speed-up over flat analysis in addition to practical tradeoffs for accuracy, CPU time and memory usage.