A computer implemented method, data processing system, and computer usable program code are provided for reducing a chip package model. Responsive to receiving the chip package model, an inductance and a resistance of the chip package model is measured. The inductance and the resistance are measured using only a set of external nodes of the chip package model. A reduced node resistor model and a reduced node inductor model are created using the inductance and the resistance of the chip package model. A combined reduced node resistor-inductor chip package model is formed by combining the reduced node resistor model and reduced node inductor model.
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