Models for nmos4 & pmos4, and finding files with specific contents

Dear all,

Two slightly related questions:

(Q1) Could anybody please tell if the IC tool (v5.10.41_USR2) includes
any default model files for the transistor cells "nmos4" and "pmos4" in
the "analogLib" library, that could be used in Spectre simulations?
I would like to simulate a simple inverter made with these components
whenever I need to check if an installation of this tool is working
properly on a PC, without any design kit installed yet. If the
simulation runs smoothly, the installation is considered successful. I
need to do this several times because I am trying to install cadence in
different linux distros and versions (mostly Fedora).

Using the command line, I tried to find any files that could contain
the models, by running the following in the top directory if IC:

# grep -i "model .nmos4" `find . -name "*" -print`

However, this command, which works just fine in Solaris, doesn't work
at all in Fedora -I don't know why. And to make things worse, I HAVE
NOT been able to find a way of performing this type of content-based
file searchs by using the graphical tools for file management provided
by default with Fedora (Nautilius, etc). So, (Q2) could anybody please
tell if there exists (in Fedora 5) a way for finding files with
specific contents? I am sure there has to be some reasonable way!

Thanks in advance for any clue.

Regards,

 

Try this command.

find . -name "*" -print -exec grep -i "model .nmos4" {} \;

It works perfectly in Solaris, (I have not tested it in Fedora).

Regards,

=======================================================================

http://cmp.imag.fr
=======================================================================
CMP Introducing the Access to 65nm CMOS Process from STMicroelectronics
http://cmp.imag.fr/Download/forms/CMOS065_announce.pdf
=======================================================================

 

Thanks a lot for your help Kholdoun; unluckily the command doesn't seem
to work in Fedora (it doesn't complain of any errors, but it just
returns all the files in the directory hierarchy, irrespective of their
content).

Any ideas of how to work around this? ... it is very frustrating to
see how something trivial in windows can be totally obscure in linux!

 

BTW, any clue about the location of "default" models nmos4 and pmos4
(if any)?

Thanks in advance.

 

Try this command under csh or tcsh, may be bash or other shells are
not using the same syntax for piping commands ...

to do so, type csh or tsch, and then execute your original command or
the one I suggested.

Regards,

=======================================================================

http://cmp.imag.fr
=======================================================================
CMP Introducing the Access to 65nm CMOS Process from STMicroelectronics
http://cmp.imag.fr/Download/forms/CMOS065_announce.pdf
=======================================================================

 

Try to look at the directory :
<Cadence_installation>/tools/dfII/samples/artist/models/spectre

There are examples of MOS and other components there.

The file :
<Cadence_installation>/tools/dfII/samples/artist/models/spectreSModels/nmos4.m
contains an example of nmos4
I'm not going to recommand you using SpectreS. It is old now,
and replaced by Spectre Direct.

By the way, I recognize that my command is printing the list of the
files from the hierarchy. If you redirect this to a file and then
search for the string "nmos4" you will find the matching grep and the
file name.

Regards,

=======================================================================

http://cmp.imag.fr
=======================================================================
CMP Introducing the Access to 65nm CMOS Process from STMicroelectronics
http://cmp.imag.fr/Download/forms/CMOS065_announce.pdf
=======================================================================

 

(Q1) Could anybody please tell if the IC tool (v5.10.41_USR2) includes

No, I suggest to go to http://pdk.cadence.com
and download the generic PDK for you quality test,
it's free, regarding my last information.

Also it seems to me a bit crazy, to make this decision based on a simple inverter
simulation is running or not. There are quite more issues which will arise.
I suggest to stay with one distro and version.

Wrong approach a the model must not necessarily have the name of the library
cell. And as I told yo in the first Q. there are no models shipped with the
installation.

Bernd

 

Why bothering with Fedora?

check your aliases. I experience that system administrators create
aliases to commands and "provide" these aliases to the user without
telling them. I am an enemy of "provided" aliases because they fool the
luser to think that _that_ is the proper way of functionality. I
specially think of the -i flags to mv and cp which make lusers do
stupid things on non-aliased machines. You get the pure, unaliased
version by inserting a \ "backslash" in front of the command.

If your Fedora also has a decent desktop installed look for "kfind"
which has the features you want.