spectre ERROR (SFE-675)

I had some issues with Spectre after an update. Firstly, I couldn't find libelf.so.1, so I copied it into the mmsim directory library tree. Use "ldd" to figure out what is missing for Spectre. The next issue was a new one for me:

spectre ERROR (SFE-675)

You need to specify the type for "allModels.scs" in the ADS model options. I selected "tt" from the dropdown and it magically started working as magically as it stopped working.

Looking in the allModels.scs, the definition for the modes are given:

***********************************************************************
* "TT" corner : Nominal (default) process and Monte Carlo analyses
* "FFF" functional corner : "Fast" NMOS, "Fast" PMOS
* "SSF" functional corner : "Slow" NMOS, "Slow" PMOS
* "FS" corner : "Fast" NMOS, "Slow" PMOS
* "SF" corner : "Slow" NMOS, "Fast" PMOS
* "FF" corner : "Fast" NMOS, "Fast" PMOS
* "SS" corner : "Slow" NMOS, "Slow" PMOS
***********************************************************************

I was simulating subthreshold, so I've found that TT worked just as well as anything else because the BSIM models this was attached to don't do a good job at surface potential modeling.