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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
The following questions investigate the impact of small and simple caches using CACTI, and assume a 90 nm (0.09 µm) technology.
a. Compare the access times of 32 KB caches with 64-byte blocks and a single bank. What is the relative access times of two-way and four-way set associative caches in comparison to a direct-mapped organization?
b. Compare the access times of two-way set-associative caches with
64-byte blocks and a single bank. What is the relative access times of 32 KB
and 64 KB caches in comparison to a 16 KB cache?
c. Does the access time for a typical level 1 cache organization increase with size roughly as the capacity in bytes B, the square root of B, or the log of B ?
d. Find the cache organization with the lowest average memory access time given the miss ratio table in Figure 5.29 and a cache access time budget of 0.90 ns. What is this organization, and does it have the lowest miss rate of all organizations for its capacity?
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