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krisi
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Re: Looking forward to your interview with Insieme folks!
krisi   11/8/2013 12:43:02 PM
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Let me get this stright...3 of your brightests engineers leave your company, you give them $100M to develop a product..a year later you buy these guys out  for $750M!...this is American dreamed exponential...I need to talk to my boss about spinning me out and in!...I will take only 10% of what Insieme folks took ;-)

asic_pal
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Re: Looking forward to your interview with Insieme folks!
asic_pal   11/7/2013 6:44:00 PM
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rick merritt
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Re: Looking forward to your interview with Insieme folks!
rick merritt   11/7/2013 5:39:11 PM
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@ASIC_Pal: I suspect Insieme has been around more than a year, but don't know how long. Does anyone else?

asic_pal
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Re: Looking forward to your interview with Insieme folks!
asic_pal   11/7/2013 1:45:51 PM
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Typically it takes at least 3 years for any HW/SW startup to bring the Idea to Production worthiness.

It would be interesting know what insieme develepped in a year, that's values $1B.

rick merritt
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Re: Tech insights?
rick merritt   11/6/2013 11:05:20 PM
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@Kris: Yeah, pins are a limiter in these designs!

daleste
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Re: Tech insights?
daleste   11/6/2013 8:49:30 PM
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That's a lot of pins.  It may be more cost effective to be a chip set so that the total die area is less.  Of course that adds communication issues between chips.

krisi
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Re: Tech insights?
krisi   11/6/2013 12:36:19 PM
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It might be still big honking die Rick!

I have not designed a networking ASIC for at least 10 years but still remember few things on the topic ;-).You probably need 1 Tb/s aggregate bandwidth (or more) so with 10 Gb/s per pin (differential) that requires 400 pins. Plus ground, power, control etc. Can be 1000+ IO pins at the end. Plus billion little muxes inside the core. Requires careful engineering, probably cost few million $ to tape-out but no smart packet processing as it is done today (famers, packet processors, etc) which will be done elsewhere.

The bottom line is that it's still a matter of N-to-N connections and no software can solve that problem. BTW, in today's complex routers there is lots of software already so the software component is not new, it is just executed somewhere else so networking can be controlled by the box operator not by the box manufacturer.

At the end all the software can do to help get packets where they need to go is simplify the core switching problem to something like a cross-bar, you can't go simpler than that! BTW, all switching concept are very elegantly explained by Carl McCrosky is our Wiley book "Network Infrastructure and Architecture: Designing High-Availability Networks".

Looking forward to your interview with Insieme folks! Kris

katieanne
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SDN Drive
katieanne   11/6/2013 11:45:55 AM
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I know people have lots of opinions and that is good. I guess when this SDN Drive can be a good tool in the future then it will be worth the investment. - Aldo Disorbo

chanj0
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Proprietary vs Openness
chanj0   11/6/2013 11:42:30 AM
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SDN starts from openness. The primary goal is to ease management and potentially improve network utilization. To me, a consortium shall be formed and a set of standards shall be agreed among different vendors to ensure active routing/switching reconfiguration can be in a larger scale. I can understand the benefit of proprietary solution to a company. I believe the power of standard and agreement to a bigger scale.

rick merritt
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Re: Tech insights?
rick merritt   11/6/2013 10:56:38 AM
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@Kris: Understood, but Cisco ASICs are traditionally pretty big honking die. I hope to get an interview with an Insieme tech exec at some point to talk about the designs.

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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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