July 2004
Intermediate to advanced
1744 pages
35h 3m
English
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Cache Real Estate Management
The Lookup
When a cache miss occurs, a new line must be fetched from memory and placed in the cache. Refer to Figure 17-4 on page 404. Assume that a memory address was submitted to the cache for a lookup and, as shown in the illustration, the Line portion of the address selected set 3 in the directories (i.e., the set of four directory entries at offset 3 in each of the four directories). Assume that all four of the entries are valid, that the cache is a MESI cache (i.e., a WB cache), and that the four entries contain the following:
Entry 3 in Directory 0 contains a Page address of 0349A03h and its 2-bit State field indicates that the line is in the E (Exclusive) state. This means that the cache contains line 3 from ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.