Abstract
In this paper, we present a fully parallel transistor level full-chip circuit simulation tool with SPICE-accuracy for general circuit designs. The proposed overlapping domain decomposition approach partitions the circuit into a linear subdomain and multiple non-linear subdomains based on circuit non-linearity and connectivity. Parallel iterative matrix solver is used to solve the linear domain while non-linear subdomains are parallelly distributed into different processors topologically and solved by direct solver. To achieve maximum parallelism, device model evaluation is done parallelly. Parallel domain decomposition technique is used to iteratively solve the different partitions of the circuit and ensure convergence. Orders of magnitude speedup over SPICE is observed for sets of largescale circuit designs on up to 64 processors.
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