Write out signal activities used during power analysis
Directs the PowerPlay® Power Analyzer to create a Signal Activity File (.saf) Definition, which records the toggle rates and static probabilities that occur during power analysis. If you select this option, you must specify a file name in the accompanying Output file name box.
You might want to turn on this option if you are using a large Value Change Dump File (.vcd) Definition produced by a third-party simulator. By recording signal activities to a Signal Activity File during the initial running of the PowerPlay® Analyzer, you can then use this Signal Activity File as input to subsequent power analyses, thereby saving the time required to reread a large Value Change Dump File.