saving DC operating point

T

Tarek

Guest
I started using the linux tools recently and I noticed that with one
of my PDKs, the DC small signal params don't save when I do a dc
sweep. I have a model file which contains the line

save * sigtype=all

which on UNIX will save all the small signal parameters, but does not
do so on Linux. My versions are:

Linux MMSIM: sub-version 7.1.0.031
UNIX MMSIM: sub-version 7.1.1.140.isr8

From what I recall, after MMSIM62 the * wildcard should be valid. I'm
using the same design and saved state on both platforms. Any
suggestions?
 
Hi Tarek,

Why don't you try MMSIM: sub-version 7.1.1.140.isr8 in your Linux
System ?
My guess is there might be a bug in the 7.1.0.031 version, that's why
the annotation was working under your Solaris system.
Generally speaking, you better try same versions of tools on Unix/
Linux to check the coherence of results.

Cheers,
Riad.
 
I was afraid that would come up... I'm a bit confused about upgrading
an existing hierarchy after reading the install.pdf which comes with
each tool. In general, since there are several ISRs and USRs (plus the
Base) available on downloads.cadence.com, what exactly do we need to
download? Are USRs cumulative or do we need to install one by one? If
they are cumulative, then we'd just need the Base, most recent USR and
ISR? For example, on Linux we are up to IC5141_USR5, and I know
USR6+ISRs have been released since then. To get up to date, is the
correct way to duplicate (via tar/untar) the USR5 folder, download the
latest USR, ISR and Base, then install ISR, USR, Base in that order to
the duplicate folder?

Please advise.
 
Tarek,

There is no simpler than installing the IC stream.
All what you need is to pick up the last software version. Let me
explain.
When you log to the Sourcelink Software download, you have to firstly
put yourself into the right platform, i.e. Linux, Solaris, IBM or HP.
Say you are under Linux and want to download latest version of IC5141.
Under IC5141, you have the base release, the updates (USRs) and the
hotfixes (ISRs I think). All what you need is to pick up the last one.
The hotfixes are usually the latest releases at time t but It may be
an update as well. Just check out the dates. If you download a hotfix,
then it does include everything, the base + update + hotfix. Say you
have installed HF 137 (IC5141 USR6) in /software/cds/ic/
5.10.41.500.6.137. If you need to upgrade to HF 138, then you need to
install it in another location altogether, i.e. /software/cds/ic/
5.10.41.500.6.138
You must not override the old install. You may leave, archive or
delete the old 137. I usually leave a few versions in the disk and
start archiving when the IT guys start shouting at me because of
occupying loads of disk space :)

Cheers,
Riad.
 
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