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Posted: September 23rd, 2022
CSCI 620 Homework 2 Fall 2022
CSCI 620 Homework 2 Fall 2022
CSCI 620 Homework 2
Due: September 23, 2022
Points: 35
Do the following problems; show your work:
Problem A (3 Points)
Consider a 2 MB 4-way set associative cache. Suppose a block is 64 bytes and an
address consists of 32 bits. If we assume that an address field is divided as
described in the text: tag-field, index-field, block-offset, compute the length of
each field for this cache; show your work:
a. tag-field length in bits:
b. index-field length in bits:
c. block-offset length in bits:
A.2 (5 Points) In computing the answer to this problem:
• assume that the conditional branches are taken 70% of the time, and not taken
30% of the time.
• do the computation for the average frequencies of astar and hmmer (not bzip
and hmmer).
B.2 (6 Points) Do parts a and b. For part b, assume that the cache is an eight-way
set associative cache.
B.8 (6 Points) Do parts a and b. In coming up with your estimates, assume that
the hit times are relatively small and can be ignored.
B.13 (5 Points) Assume that the content of the TLB does not change for this
problem.
2.20 (4 Points) Do part a with the following changes: the first 16 byte block can
be received in 60 cycles (not 120); and each additional 16 byte block requires 32
cycles (not 16)..
2.42 (6 Points) Do parts c and d. Compute slowdown as a ratio relative to native
execution. In addition: what is the geometric mean of the pure and para
virtualization ratios?
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