| A. R. Conn, R. A. Haring, C. Visweswariah, and C. W. Wu, "Circuit optimization via adjoint Lagrangians," IEEE International Conference on Computer-Aided Design, pp. 281--288, November 1997. |
....similar to the procedure in [16] To calculate the delay sensitivities and the skew sensitivities, the conventional adjoint sensitivity analysis is first applied to calculate the partial derivatives of voltages with respect to all the wire widths in the network. Using the formula described in [4], the delay sensitivity of sink i with respect to wire width w pq can be computed as pq t V w V pq w = 14) The same method can be used to compute D j w pq . From these, we obtain the skew sensitivity as well as the transition time sensitivity. In each iteration of the heuristic ....
A. R. Conn, et al., "Circuit Optimization via Adjoint Lagrangians," Proceedings of the IEEE/ACM International Conference on ComputerAided Design, pp. 281 -- 288, 1997.
....quality of each proposed circuit solution. Obviously, we would prefer to simulate each circuit fully, but simulation in the loop has usually been deemed too expensive for synthesis. To tune a circuit to find an improved nearby solution, a variety of simulation based techniques exist [9] 10] [11]. However, in synthesis we often have no feasible solution at the start of numerical search. Hence, most synthesis approaches trade quality for speed, by substituting some simpler, faster form of circuit evaluation, to allow search of many more solution candidates. In this paper we argue that ....
.... LIMSoft: automated tool for sensitivity analysis and test vector generation, IEE Proc. Circuits Devices Systems, Vol 143, No. 6, December 1996. 10] W. Nye, et al. DELIGHT.SPICE: an optimization based system for the design of integrated circuits, IEEE Trans. CAD, vol. 7, April 1988. [11] A.R. Conn, R.A. Haud, C. Viswesvariah, C.W. Wu, Circuit optimization via adjoint lagrangians, Proc. ACM IEEE ICCAD, Nov. 1997. 12] M. Krasnicki, R. Phelps, R. A. Rutenbar, L.R. Carley, MAELSTROM: Efficient Simulation Based Synthesis for Custom Analog Cells, submitted to ACM IEEE 1999 DAC. ....
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A.R. Conn, R.A. Haud, C. Viswesvariah, C.W. Wu, "Circuit optimization via adjoint lagrangians," Proc. ACM/IEEE ICCAD, Nov. 1997.
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A. R. Conn, R. A. Haring, C. Visweswariah, and C. W. Wu, "Circuit optimization via adjoint Lagrangians," IEEE International Conference on Computer-Aided Design, pp. 281--288, November 1997.
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A. R. Conn, R. A. Haring, C. Visweswariah, and C. W. Wu, "Circuit optimization via adjoint Lagrangians," IEEE International Conference on Computer-Aided Design, pp. 281-- 288, November 1997.
....numerical noise levels, and practical stopping criteria the implementation is designed to terminate before many asymptotic iterations are taken. The algorithms described in this paper have been used in a dynamic simulation based circuit optimization tool called Ji yTune (see [4] 5] and [10]) Ji yTune optimizes transistor and wire sizes of digital integrated circuits to meet delay, power, and area goals. It is based on fast circuit simulation and time domain sensitivity computation in SPECS (see [13] and [28] To optimize multiple path delays through a high performance circuit, the ....
A. R. Conn, R. A. Haring, C. Visweswariah, and C. W. Wu, Circuit optimization via adjoint Lagrangians, ICCAD, (1997), pp. 281-288.
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