On Fri, Jul 16, 2010 at 6:49 PM, Robert Myers <rbmyers...@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. -- Chris
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