os that rather uses the gpu?
jd1008 at gmail.com
Sat Jul 17 03:17:28 UTC 2010
On 07/16/2010 04:55 PM, Christofer C. Bell wrote:
> On Fri, Jul 16, 2010 at 6:49 PM, Robert Myers <rbmyersusa at gmail.com
> <mailto:rbmyersusa at gmail.com>> wrote:
> Whether you like it or not, and whether, even more important, you
> understand it or not, the architecture of a computer has a big
> impact on the kinds of models you can implement with any degree of
> efficiency on the computer. Hanging lots of flops on inadequate
> bandwidth is popular because you can get a high ranking on the Top
> 500 list with a minimal expenditure, but it also means that you
> can't do an important calculation like a global FFT at anything
> like reasonable efficiency. Flops are almost free. Bandwidth is
> expensive. Unfortunately, what is almost free (flops) can be
> nearly useless for, say, an FFT unless you have the bandwidth to
> move data around globally fast enough.
> You need to make friends with a guy named Edward Lorenz. Bandwidth
> has nothing to do with it. Do you even know what this term means?
> I don't think name-calling and labeling ever helps.
> Then stop doing it.
"In August 2007, PCI-SIG announced that PCI Express 3.0 will carry a bit
rate of 8 gigatransfers <http://en.wikipedia.org/wiki/Gigatransfer> per
(128 bits per transfer) !!
That is about 137,438,953,472 bytes per second.
Viva SLI and multi-treaflop/s gpu's !!
Alright! All you DSP fans, and telemetry data fans, get to work :) :)
And you wifi cracker fans, you now have even a better tool than
what the japanese team had:
If they could crack TKIP in under a minute using a laptop, perhaps
now they can tackle and crack AES, which they were not able to do back
Technology is indeed a two-edged sword :)
It temporarily gives us a false sense of security, only to be
robbed of that sense by self same technology.
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