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

[agathon <hreidmarkailen@xxxxxxxxx>]

oops... the 2.5Gbps should be 5Gbps  ---> a big difference in some of the
answers I think

On 4/11/07, agathon <hreidmarkailen@xxxxxxxxx> wrote:
>
> 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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