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Politics : Formerly About Advanced Micro Devices
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To: Scumbria who wrote (92886)2/13/2000 7:17:00 PM
From: Dan3  Read Replies (2) of 1574489
 
Re: A victim cache behind a 2-way cache would be a very good combination, because the 2 way cache is casting out a lot of useful addresses- which would be stored in the victim cache.
On the other hand, a victim cache behind a 16 way cache would be much less efficient because the addresses being cast out of the 16 way cache are less likely to be reused.

That was basically the point that I was trying to make. The 16-way cache gives up 12.5% (2/16ths) of its useful capacity duplicating addresses in the 2-way cache - but the remainder of the 16-way cache acts as a psuedo victim cache, maintaining addresses cast out of the 2-way cache.

Not as effective as a true victim cache, but possibly easier to implement?

Dan
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