@nitishn5,
I think he means Cadence calculates W/L of MOS transistors for him.I do not use Cadence,so i don't know if it can do that.Yeah,tanner/cadence shouldn't make a difference if you can calculate yourself W/L ratios of transistors.
@FARUKHKHAN:
i did not understand your statement:"i had searched alot but fing only in cadence not in Tanner".
But,somehow from cadence you can get W/L values,use the values that you get from cadence & try those values in Tanner EDA.
Best option would be to calculate them on your own.