Strange Assura error, was not an error at all.

I was having a strange assura error

localhost:~/ic/cadence/ibm7sf> avlck:   ERROR: The command /tools/cadence/assura615oa/share/oa/bin/sysname returned an error status:
                            unknown
avlck: INFO: Note that OpenAccess (OA) requires running the Configure phase.
avlck: See the "OpenAccess Installation and Configuration Guide" before
avlck: you complete the configuration step. This manual is included with
avlck: the Cadence product documentation.

localhost:~/ic/cadence/ibm7sf>  /tools/cadence/assura615oa/share/oa/bin/sysname
linux_rhel40_gcc44x

This doesn't make much sense, and because of how huge Cadence is as a piece of software, it was probably something else. Assura actually runs a file called assura_LVS.run, so I did a chmod +x on it.

localhost:~/ic/cadence/ibm7sf> ./.assura_LVS.run 
/tools/cadence/assura615oa/tools/assura/bin/32bit/assura: error while loading shared libraries: libelf.so.1: wrong ELF class: ELFCLASS64

Ah, it's shared library errors! "ldd /tools/cadence/assura615oa/tools/assura/bin/32bit/assura" will reveal the problems.

lmstat file not found.

I was getting a file not found error from lmstat after a system upgrade. lmstat depends on ld-lsb.so.3, which doesn't exist on my system anymore. I fixed it with a link:

ln -s ld-linux.so.2 ld-lsb.so.3

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.

virtuoso: command not found.

Cadence switch from ic5141 to ic615hf; however, I'm not on redhat, but debian. That causes some issues. The first issue is

virtuoso: command not found.

apt-get install ksh

The next issue was that I did not have redhat, but you can force things with the environmental variable of

OA_UNSUPPORTED_PLAT linux_rhel40_gcc44x