A solution for one analysis can be an appropriate starting point for the next analysis. For example, if a DC analysis precedes a transient analysis, you can use the DC solution as the first guess for the initial point in the transient analysis solution. There are two Spectre analysis parameters that let you start analyses from previous solutions. They are available for most Spectre analyses.
If you set this parameter to restart=no in an analysis statement, the Spectre simulator uses the DC solution of the previous analysis as an initial guess for the following analysis.
- The prevoppoint parameter
If you set this parameter to prevoppoint=yes in an analysis statement, the Spectre simulator does not compute or recompute the operating point. Instead, it uses the operating point computed by the previous analysis.
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