FreeLists / si-list / [SI-LIST] experiences with new field solvers / methods?

[agathon <hreidmarkailen@xxxxxxxxx>]

Greetings,
I'm interested in actual tech and GUI/function evaluations of any new tools
for 3D Sparam models and RLGC extraction.
For models requiring ___ 16 to 32GHz BW ___  and typical application a ~1000
ball FCBGA with important io:
16 x 2.5Gbps
 8 x 3.125Gbps
128-bit DDR2-800

Ie:  compared to popular tools...  real experiences or practical knowledge
as user or from the inside...

1) IBM alphaworks,
2) macromodeling or model-order reduction tools,
3) quality of existing tools' passivity/causality enforcement; checking
strategies (beyond simple references, which I have; global forcing or
attenuation isn't trusted)

I see loads of references out there to new rational function approaches to
model-order reduction and passivity enforcement, but wanted to know the
real-world disadvantages or state of development by known vendors using new
methods, to solve issues such as in #3 above.


The ultimate questions I face (maybe I'm off a bit here, too):

a) attempting a reasonable subset of an IC pkg to model, to avoid the
issues, incl. sheer model size & convergence, etc.
b) how inevitable are the issues cited, given a knowledgeable user
c) is it valid to take a _FULL_ pkg 3d phys. model then just put in a
section of traces, to at least get some semblance of the full pkg effect and
sim for PDN/SSN, but limit the model size?


Regards,
Agathon

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