D vs VM-based platforms

Stephen Waits steve at waits.net
Tue May 1 16:08:17 PDT 2007


Daniel Keep wrote:
> 
> Funny thing, turns out SSE is actually *slower* for doing a dot product
> than regular old x87 code!

You should qualify this - I'm guessing you mean for a single dot 
product?  If so, this is the case in most vector coprocessors, as 
load/store overhead can easily outweigh the gains in vectorization.

--Steve



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