EBK COMPUTER SYSTEMS
EBK COMPUTER SYSTEMS
3rd Edition
ISBN: 8220101459107
Author: O'HALLARON
Publisher: YUZU
Question
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Chapter 6.5, Problem 6.20PP

A)

Program Plan Intro

Given Information:

The definition for the code is mentioned below:

//Traverse through the grid

for (i =0; i < 16; i++)

{

for (j = 0; j < 16; j++)

{

//add values of x into grid

total_x += grid[i][j].x;

//add values of y into grid

total_y += grid[i][j].y;

}

}

B)

Program Plan Intro

Given Information:

The definition for the code is mentioned below:

//Traverse through the grid

for (i =0; i < 16; i++)

{

for (j = 0; j < 16; j++)

{

//add values of x into grid

total_x += grid[i][j].x;

//add values of y into grid

total_y += grid[i][j].y;

}

}

C)

Explanation of Solution

Miss rate:

  • The cache can only hold half of the elements in the array, so that means that a read to grid[8][0] will evict the block that was loaded when we read grid[0][0].  Since this block also contained grid[0][1], the first read of grid[0][1] will be a miss.
  • Hence, each iteration will have one hit and one miss. 
  • This means one will have 128 hits and 128 misses.

Hence,

miss rate = (numberofmiss/totalreads

D)

Explanation of Solution

New Miss Rate:

If the cache were twice as big them also no change will be made to the mi...

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