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How to reduce time needed before transient simulation to be started in case of large circuit

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Hi,

I have to run transient simulation for a very large circuit. But every time, before starting transient simulation( simulation for different times), it is taking a significant amount of time to find DC solution. I have set up "Initial Condition Parameter" of transient simulation as follows:

ic: all, skipdc: no, readic: spectre.ic; also i tried, readic:spectre.fc. But both of them, don't help to reduce the simulation time for DC convergence. Can you please help me on this aspect? And another question: What's the difference between spectre.ic and spectre.fc files and which one should be appropriate for readic field?

Program: @(#)$CDS: virtuoso version 6.1.6-64b ,Sub version: sub-version IC6.1.6-64b.500.1


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