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To: Saturn V who wrote (81904)5/28/1999 2:54:00 AM
From: Scumbria  Read Replies (1) of 186894
 
SV,

However with SSE the main memory is prefetched well ahead of execution

Having an instruction for prefetching, and having compilers that can use it effeciently, are two completely different matters. PowerPC has a cache touch instruction, which doesn't get used much because the penalty for incorrectly speculatively prefetching load misses is too great.

Scumbria
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