la Web browsers typically maintain a cache of recently accessed image resources. Explain whether this is an example of spatial locality, tempor locality, or both. b Assume a cache is 8-way set-associative, with a total cache size of 210 blocks, and the cached address-space contains 224 blocks. What is the to number of storage bits dedicated to tag bits? The “last-level cache" cache is the cache closest to the RAM, while the
la Web browsers typically maintain a cache of recently accessed image resources. Explain whether this is an example of spatial locality, tempor locality, or both. b Assume a cache is 8-way set-associative, with a total cache size of 210 blocks, and the cached address-space contains 224 blocks. What is the to number of storage bits dedicated to tag bits? The “last-level cache" cache is the cache closest to the RAM, while the
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Help me please
![la Web browsers typically maintain a cache of recently accessed image
resources. Explain whether this is an example of spatial locality, temporal
locality, or both.
b Assume a cache is 8-way set-associative, with a total cache size of 210
blocks, and the cached address-space contains 224 blocks. What is the total
number of storage bits dedicated to tag bits?
c The "last-level cache" cache is the cache closest to the RAM, while the L1
cache is closest to the CPU. In real systems the last-level-cache almost
always uses multi-word blocks.
i) Use RAM latency and bandwidth to explain why multi-word blocks
are so important for the last-level cache.
ii) In principle each cache level could have any block-size, but in practise
it is almost always a binary-power size number of bytes. Use circuit
critical path to explain why.
iii) It is very rare for the L1 cache to have a larger block size than the
last-level-cache. Give one reason why.
iv) Assume there are two cache levels, which have hit rates of h1, and h2.
What is the AMAT for this system? Define any extra parameters
needed.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2de8b9d4-03bb-42eb-ab02-b4dbe54607e4%2F755c846d-37f7-4bc8-97ff-5fd2dbaee862%2F90lbo1p_processed.png&w=3840&q=75)
Transcribed Image Text:la Web browsers typically maintain a cache of recently accessed image
resources. Explain whether this is an example of spatial locality, temporal
locality, or both.
b Assume a cache is 8-way set-associative, with a total cache size of 210
blocks, and the cached address-space contains 224 blocks. What is the total
number of storage bits dedicated to tag bits?
c The "last-level cache" cache is the cache closest to the RAM, while the L1
cache is closest to the CPU. In real systems the last-level-cache almost
always uses multi-word blocks.
i) Use RAM latency and bandwidth to explain why multi-word blocks
are so important for the last-level cache.
ii) In principle each cache level could have any block-size, but in practise
it is almost always a binary-power size number of bytes. Use circuit
critical path to explain why.
iii) It is very rare for the L1 cache to have a larger block size than the
last-level-cache. Give one reason why.
iv) Assume there are two cache levels, which have hit rates of h1, and h2.
What is the AMAT for this system? Define any extra parameters
needed.
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