A 3 what is the cpi of the above system including

a) (3) What is the CPI of the above system, including memory behavior?
b) (5) Your team is considering adding an L2 cache for data accesses only. Assuming that the L2 access
time is 3D, how high can the L2 miss rate be and still improve AMAT?
3D/K

Question 7
Assume a 1-set cache, and consider the following cache-block level 38-access pattern, wherein each
letter [a- z] represents an access to one of 26 distinct cache blocks (e.g. “foo” would access block f, o,
and then o again and “bar” would access blocks b, then a, then r where f,o,b,a and r are all block
locations:
thequickbrownfoxesjumpedoverthelazydog
a. List which valid blocks are in the cache if replacement is LRU, all frames are initially invalid, and
the number of ways is 12
b. What would the hit rate of this cache be if the associativity were 26, assuming that all entries
are initially invalid?