Hi Bob & Kari
I did the following things,why the spef from "timeDesign -signoff -si" is different to the spef from "extractRC".
1. spef_01.spef.gz (one way)
setExtractRCMode -engine postRoute -effortLevel signoff -coupled true -lefTechFileMap qrc.layermap
timeDesign -signoff -si
so,the spef file "spef_01.spef.gz" will be extracted.
2. spef_02.spef.gz (another way)
so,the spef file "spef_02.spef.gz" will be extracted.
but,why there are slight difference between "spef_01.spef.gz" and "spef_02.spef.gz" and which is more suitable to use?
Thank you for reply.I think the option "-couple true" will force the command extractRC to
extract the si spef.
so,in my opinion the above two spef should be same,however there are subtle differences between them.