Sorry, I don't know what your script does, as I mentioned I have never needed CDL processing to simulate. And the model's name isn't coming from the scs file's name. If you open the scs file with gedit, or notepad, anything than there should be a line for your device, like: model nfetim4 bsim4 ....... I don't suggest to rewrite that. And if you open the calibre view, press q on a 4T device to see the properties, find the row 'Model name'. That is the exact model name which you have to look for in the corresponding scs file.