Mayank,
It is not really clear what you are asking for. The big picture
is that everybody in the industry worries about models and
modeling, that is, why there is the Compact Modeling Council.
You might this site helpful,
http://www.geia.org/Meeting-Minutes-and-Presentations-from-2007-to-PresentAs a result of the CMC, the models themselves should be pretty
consistent, however, as AC points out the there may be some
differences between solvers. The other place where there may
be gray is when there are no defined standard models.
Best Regards,
Sheldon