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rick merritt
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Re: Overheads
rick merritt   8/12/2014 11:29:20 AM
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@Maltanar: Thanks for making the Transmeta connection. Reportedly, Denver was initially going t sue Transmeta tech to create a virtual x86, but I guess that wadsn't true or didn't work out.

It will be interesting to see this benchmarked against the A57 and other custom ARM V8 cores.

I'm told Nvidia canceled its server versions of Denver...anyone heard about that?

maltanar
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Overheads
maltanar   8/12/2014 9:15:46 AM
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Interesting approach for extracting ILP -- though I guess it's been tried before (first commenter to name Transmeta wins a...a rubber duck!) and it doesn't seem to have caught mainstream attention. The forecasted end of Moore's Law may change things there, though.

What immediately came to mind was the optimization overheads. Although the optimization cache (the 128MB chunk of main memory) should ameliorate the overhead for frequently used applications, infrequent applications or those that show very input-dependent behavior may not get as large benefits.

Also, I expect benchmarking this and comparing against the competition will be non-trivial.

 

 

 



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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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