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Intel unveils 1 TFLOP/s Knight's Corner

11/16/2011 06:51 AM EST
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Charles.Desassure
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re: Intel unveils 1 TFLOP/s Knight's Corner
Charles.Desassure   11/20/2011 3:07:30 PM
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Hats off to you Intel...another success story.

Lee Harrison
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re: Intel unveils 1 TFLOP/s Knight's Corner
Lee Harrison   11/22/2011 2:00:42 AM
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The ratio of brand advocacy to informed commentary seems extraordinarily high in many of the sentiments above. Knights Corner gets most of those flops from a very wide SIMD micro-architecture. I happen to really LIKE SIMD micro-arches, and have done quite a lot of programming for them, and from what I see of the nLRBI (that's what the instruction set was called when the device was "Larrabee") it appears to be a very-well thought out SIMD ISA, far better than SSE. But the claim that ordinary "scalar" procedural programs written in C, Fortran etc are automatically going to be accelerated to Tflops ... simply isn't so. If you can't exploit the SIMD width efficiently ... its a 2-issue x86 core which isn't all that different from Atom. It's the SIMD extensions that make this design "powerful." Auto-vectorizing compilers haven't lived up to the hype so far (for any microarch ... GPGPUs included). AMD advocacy is misplaced here, because so far as I know, AMD isn't trying to compete in specialized HPC processors and/or adjunct accelerators. The competition is IBM with its spectrum of Cell/Power7/BlueGeneQ processors, and to some extent the nVidia Kepler+ARM initiative. It's going to be an interesting competition ... I wouldn't make any predictions of success. Folks should remember that both Cell and Power7 have successively not "conquered the HPC world," and for those thinking that Intel has avoided such experiences .. remember Itanium? Or for that matter that Knight's Corner is an updated Larrabee?

palf
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re: Intel unveils 1 TFLOP/s Knight's Corner
palf   12/14/2011 8:10:03 PM
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My engineering career began in 1970 and I was using the 8086 in 1976. It's always somewhat of an odd feeling to still see the x86 label being referenced. I would never have imagined it back then. Kudos to Intel for sustaining the product line.

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