Random walks in a supply network

14 years 6 months ago
Random walks in a supply network
This paper presents a power grid analyzer based on a random walk technique. A linear-time algorithm is first demonstrated for DC analysis, and is then extended to perform transient analysis. The method has the desirable property of localizing computation, so that it shows massive benefits over conventional methods when only a small part of the grid is to be analyzed (for example, when the effects of small changes to the grid are to be examined). Even for the full analysis of the grid, experimental results show that the method is faster than existing approaches and has an acceptable error margin. This method has been applied to test circuits of up to 2.3M nodes. For example, for a circuit with 70K nodes, the solution time for a single node was 0.42 sec and the complete solution was obtained in 17.6 sec. Categories and Subject Descriptors B.7.2 [Integrated Circuits]: Design Aids ? simulation. General Terms Algorithms, Reliability, Verification. Keywords Random walk, power grid.
Haifeng Qian, Sani R. Nassif, Sachin S. Sapatnekar
Added 13 Nov 2009
Updated 13 Nov 2009
Type Conference
Year 2003
Where DAC
Authors Haifeng Qian, Sani R. Nassif, Sachin S. Sapatnekar
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