I'm a freshman of IC. When using Virtuoso to extract the parasitic parameters of layout, I was told the software could extract just the parasitic RCs of a single wire or several selected wires instead of the whole layout. However, I don't know how to do this.
I used Virtuoso several years ago,so I could only give you some rough hints :roll:
Virtuoso uses LPE to extract the parasitic parameters of layout, so you must have a script file similiar to DRC/LVS check command script file and you can specifiy the nets you want to extract parasitic RC parameters.
For further details,pls refer to Virtuoso manual. :wink: