I am trying to do the PVT simulation for my circuit using 65nm Global foundries PDK. I am not sure how the process variation simulation is perforemd in this PDK. (TT,FF,FS, SF). The problem seems with model file required for the process simulation. In the gpdk for example there is one file that you need to select to perform TT, FF, FS or SS. could you point out the corresponding file in 65nm GF process or any documentaion where i could refer to.