About Skill and Ocean application

[Mobil]

Hello all,

Just asking a silly question, what is the advantage of skill and
ocean in circuit design and simulation and what is the situation (as
digital/mix signal design or analogue/RF design) suitable to use skill
and ocean?

Since I starting using Cadence, I always follow the way to draw simple
schematic and open ADE to run simulation. But when seeing lots of
people using skill and ocean for their design, I think it's better to
learn these methods. Before beginning to read hundreds of pages of
skill and ocean pdf files, could someone provide me the answer for
this question?
Thank you.

Mobil

 

[fogh]

Mobil wrote:

Hello all,

Just asking a silly question, what is the advantage of skill and
ocean in circuit design and simulation and what is the situation (as
digital/mix signal design or analogue/RF design) suitable to use skill
and ocean?

Since I starting using Cadence, I always follow the way to draw simple
schematic and open ADE to run simulation. But when seeing lots of
people using skill and ocean for their design, I think it's better to
learn these methods. Before beginning to read hundreds of pages of
skill and ocean pdf files, could someone provide me the answer for
this question?
Thank you.

Mobil
Strange question but easy answer: you can automate with ocean what you

would do in ADE. Meaning that you can batch, parameterise and generalise ...
But ocean will run your sessions in sequence, unlike ADE, thus it is
not an interface to script ADE. And you will sometimes have to automate
also your postprocessing. If however you want (your previous post) to
invoque ADE from skill and handle multiple sessions, you can start here
http://groups.google.fr/group/comp.cad.cadence/browse_thread/thread/f1744c2163ebfc0b/e42a894a7c6b55e9
and then go on to the ocean manual and primer. Don t worry, hundreds of
pages flick fast when they are laid out like a slideshow ( Have you
looked at some typical cadence docs yet ? )

My 2cents is that you should invest the time. Do not underestimate
however the flexibily of plain netlist editing, and get acquainted with
your simulator's syntax (plus verilogA) first.

--
Frederic

 

[Riad KACED]

Dear Mobil,

Fred is right.
Once you have finished designing your circuit with the typical
conditions, then you need to check it still meets the specs over the
temperature, the corners, the power supply range, the ouput
variations ... etc. You could typically end up with running thousands
of simulations before stamping your design as 'Good for production'.
Some people are vey patient and could manually run hundreds of
simulations from the ADE. That's the kind of things that Ocean,
combined with the power of skill could do for you. Andrew showed last
time some very nice HTML reports he did entirely get from automated
simulations using Ocean/Skill.

You can increase the complexity of the question by adding spectreMdl
into the game. Well, I don't want to confuse you, but these are few
comments from a previous discussion in the forum
http://groups.google.com/group/comp.cad.cadence/browse_thread/thread/9556ec66ffb8591c/5629780a1b9dbd1a

Regards,
Riad.

PS: There is a French phrase saying: Il n'ya pas de questions
stupides, seules les réponses peuvent l'ętre. Which means 'There is no
silly question, only the answers could be'.