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Politics : Formerly About Advanced Micro Devices
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To: Tenchusatsu who wrote (54368)4/5/1999 11:07:00 PM
From: Scumbria  Read Replies (2) of 1577799
 
Ten,

x86 data dependencies actually decrease the penalty of a multi-cycle cache. If instruction 2 is stalled waiting for data from instruction 1, it gives instruction 3 extra time to do a cache lookup without performance penalty. I don't think your argument works.

Multicycle caches have an impact if every instruction is relying on data from the cache, and bubbles form in the pipeline due to branch misprediction.

K7 is going to have excellent performance for synthetic benchmarks like SPECint, though I doubt it will run Winstone any faster than anybody else.

Scumbria
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