While PETE doesn't do anything that cannot be achieved by using different modeling codes, it is an extremely convenient and fast tool. I used it to study hypothetical devices and their effect on circuits. My approach was as follows: Assuming that anything is possible, I wanted to know which device improvement would benefit circuits the most. As such, I dialed in different mobilities, subthreshold slopes, DIBL, threshold voltages and Vdd. Such a sensitivity analysis is very useful in the times of extremely high cost of device development.
Zoran Krivokapic GLOBALFOUNDRIES (2009)