a) What is allocate on write policy do? b) What is a write back cache policy?...
a) What is allocate on write policy do?
b) What is a write back cache policy?
c) What is a capacity cache miss?
Homework Answers
a)Allocate in write policy implies that first the address in the main memory ,where the data is supposed to be written, is taken into cache and then the data is written in cache. On the other hand -no write allocate policy- refers to writing directly to the main memory.
b)Write back cache policy refers to the way in which the data is always written into cache(whenever a change is supposed to be made),and then it is written into the main memory in specified intervals or under certain conditions.
c) Capacity cache miss implies that all lines of cache are already filled and so there is no line left in the cache and thereby the incoming block from main memory cannot occupy any line in the cache.
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a) What is allocate on write policy do?
b) What is a write back cache policy?...
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Assume a cache with a write-through policy, non-write allocate. Your cache has a miss rate of 5%. There is a 150 cycle miss penalty. Additionally, it takes an extra 30 cycles to do a write. Your program has a base CPI of 1, is 20% loads, and 5% stores. What will its CPI be?
Write-allocate policy requires fetching the data block into the cache from memory when a write miss...
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(a)What is the average memory access time (AMAT) if a cache uses write-back strategy and 20%...
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Computer Architecture - Cache Problems
4, Suppose memory addresses are n bits long and the cache can hold M bytes of data. If the cache block-size is 2 bytes and the cache is k-way set associative, what is the total size of the cache with a write-through policy? How would your answer change, if at all when the cache had a write-back policy?
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Computer Architecture - Cache Problems
4, Suppose memory addresses are n bits long and the cache can hold M bytes of data. If the cache block-size is 2 bytes and the cache is k-way set associative, what is the total size of the cache with a write-through policy? How would your answer change, if at all when the cache had a write-back policy?
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