Epic's Fergusson: Xbox 360 'Approaching Upper End' Of Visual Potential

[Squilliam]

Geldorn said:

Squilliam said:

 @SPE code usage - "

On a Pentium 4 HT running at 3.4 GHz, this algorithm is able to check 24-million edges per second. On the Cell, at the end of our optimization, we achieved a performance of 538-million edges per second. This is an impressive result, but came at the price of an explosion in code complexity. While the algorithm in Listing One fits in 60 lines of source code, our final algorithm on the Cell measures 1200 lines of code."

 

 

That's a bit of a false comparisom though. Not all algorithms will need this sort of optimisation. Nor is it said that you can't just run the 60 line version for similar (i.e. about 24 million edges per second instead of the Cell powered 538 million) performance instead.

Thats true, I have seen but cannot show that the Cell CPU requires a larger overhead (not massive) than the Xenon because of how the cores are arranged and the number of cores. Essentially thats what I was getting at.