( ESNUG 296 Item 9 ) ---------------------------------------------- [7/23/98]

Subject: (ESNUG 295 #3) Cadence's PB-OPT Trounces Synopsys reoptimize_design

> It seems like Avant! is playing catch-up game on the In-Place
> Optimization front.  Cadence's PB-Opt (Placement Based Optimization)
> product does post-layout in-place optimization and is well integrated
> into our flow.
> 
> And BTW, this product has been out there for more than 3 years now...
> 
>   - [ One Of Those Evil Cadence Marketing Guys ]


From: Brian Arnold <briana@mail.fusionmm.com>

John,

With regard to Cadence's PB-OPT, I implemented this tool flow (in a former
life) and used it on very high performance designs.  The results seemed to
match Cadence's claims and this option enabled me to achieve a one-pass,
timing-convergent, design flow from RTL->layout.  This additional feature
allowed me to replace my  previous methodology, which was to iterate
(sometimes > 15 times) through Design Compiler's reoptimize_design and
Cell3/Silicon Ensemble's ECO place and route.

  - Brian Arnold
    Fusion Networks Corp.                       Longmont, CO

         ----    ----    ----    ----    ----    ----   ----

From: [ Some HP Elves ]

Conversation I had yesterday with our local place & route expert:

  "Why aren't we using Cadence's "well integrated" flow instead of this
   cobbled-together patchwork of bugs they sent us?"

Basically, it was a cost-saving measure.  We *could have* gone for the
"enable functionality" option, but it was an additional $200K.  I guess
you can't believe everything you hear from Cadence marketing, huh?

Please keep us anonymous.

  - [ Some HP Elves ]



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