rather unfortunate article on Mac

Eray Ozkural (exa) erayo at cs.bilkent.edu.tr
Sat Feb 2 10:29:13 EST 2002


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On Saturday 02 February 2002 04:19, Mark Hahn wrote:
> > did not use that part of the chip. There are prefetch operations that
> > can speed up memory access substantially that go unused. All I've seen
>
> nah.  prefetching will get code up to 80% or so of the peak/marketing
> dram bandwidth.  but alas, no Mac has shipped with better than
> 1 GB/s peak dram bandwidth, which is not competitive with the PC world,
> let alone "supercomputer territory".
>

Hence the difference between an SIMD machine and fake "multimedia" vector 
operations on today's hip CPUs.

- -- 
Eray Ozkural (exa) <erayo at cs.bilkent.edu.tr>
Comp. Sci. Dept., Bilkent University, Ankara
www: http://www.cs.bilkent.edu.tr/~erayo
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