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Concept explainers
A)
Given Information:
The given code is:
//variable declaration
//matrix
Int x[2][128];
int i;
//variable to store sum
Int sum=0;
//iterate through the matrix
for(i=0;i<128;i++)
{
//sum of matrix elements
sum+= x[0][i]*x[1][i];
}
Explanation:
- The given array is x[2][128]. The cache is initially empty and it begins to store data from “0x0” addresses.
- Here, size of (int) =4.
- Only memory accesses entries of array “x”.
- C arrays allocated in row-major order which means that each row is in their contiguous memory location.
B)
Given Information:
The given code is:
//variable declaration
//matrix
int x[2][128];
int i;
//variable to store sum
int sum=0;
//iterate through the matrix
for(i=0;i<128;i++)
{
//sum of matrix elements
sum+= x[0][i]*x[1][i];
}
Explanation:
- The given array is x[2][128]. The cache is initially empty and it begins to store data from “0x0” addresses.
- Here, size of (int) =4.
- Only memory accesses entries of array “x”.
- C arrays allocated in row-major order which means that each row is in their contiguous memory location.
C)
Given Information:
The given code is:
//variable declaration
//matrix
Int x[2][128];
int i;
//variable to store sum
Int sum=0;
//iterate through the matrix
for(i=0;i<128;i++)
{
//sum of matrix elements
sum+= x[0][i]*x[1][i];
}
Explanation:
- The given array is x[2][128]. The cache is initially empty and it begins to store data from “0x0” addresses.
- Here, size of (int) =4.
- Only memory accesses entries of array “x”.
- C arrays allocated in row-major order which means that each row is in their contiguous memory location.
D)
Given Information:
The given code is:
//variable declaration
//matrix
int x[2][128];
int i;
//variable to store sum
int sum=0;
//iterate through the matrix
for(i=0;i<128;i++)
{
//sum of matrix elements
sum+= x[0][i]*x[1][i];
}
- The given array is x[2][128]. The cache is initially empty and it begins to store data from “0x0” addresses.
- Here, size of (int) =4.
- Only memory accesses entries of array “x”.
- C arrays allocated in row-major order which means that each row is in their contiguous memory location.
E)
Given Information:
The given code is:
The given code is:
//variable declaration
//matrix
Int x[2][128];
int i;
//variable to store sum
Int sum=0;
//iterate through the matrix
for(i=0;i<128;i++)
{
//sum of matrix elements
sum+= x[0][i]*x[1][i];
}
Explanation:
- The given array is x[2][128]. The cache is initially empty and it begins to store data from “0x0” addresses.
- Here, size of (int) =4.
- Only memory accesses entries of array “x”.
- C arrays allocated in row-major order which means that each row is in their contiguous memory location.
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Chapter 6 Solutions
EBK COMPUTER SYSTEMS
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