On 07/16/2010 04:55 PM, Christofer C. Bell wrote: > On Fri, Jul 16, 2010 at 6:49 PM, Robert Myers <rbmyersusa@xxxxxxxxx > <mailto:rbmyersusa@xxxxxxxxx>> 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. > -- > Chris > > > Hi Chris, "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 second." (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: http://jwis2009.nsysu.edu.tw/location/paper/A%20Practical%20Message%20Falsification%20Attack%20on%20WPA.pdf 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 then (2009). 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. Cheers, JD -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
