The Essentials of Computer Organization and Architecture
4th Edition
ISBN: 9781284045611
Author: Linda Null, Julia Lobur
Publisher: Jones & Bartlett Learning
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Expert Solution & Answer
Chapter 9, Problem 16RETC
Explanation of Solution
Cache consistency protocol:
If any changes are made in local cache then the same changes should be updated at all the places where the copy of the similar data is present in the memory. But this makes the data inconsistent and unreliable. To resolve this issue, cache coherence must be achieved by updating the similar data at all places and this is done by a specially designed hardware known as Snoopy Cache Controller. It keeps a track of all the changes taking place in cache data and makes the necessary updation, which is done by implementing Cache consistency protocol.
This is done in two processes:
- Write through:
- In this method the memory content is updated as soon as the cache contents are modified simultaneously...
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2. Consider the following pseudocode for partition:
function partition (A,L,R)
pivotkey = A [R]
t = L
for i
L to R-1 inclusive:
if A[i] A[i]
t = t + 1
end if
end for
A [t] A[R]
return t
end function
Suppose we call partition (A,0,5) on A=[10,1,9,2,8,5]. Show the state of the list at the
indicated instances.
Initial A
After i=0 ends
After 1 ends
After i 2 ends
After i = 3 ends
After i = 4 ends
After final swap
10 19 285
[12 pts]
.NET Interactive
Solving Sudoku using Grover's Algorithm
We will now solve a simple problem using Grover's algorithm, for which we do not necessarily know the solution beforehand. Our problem is a 2x2 binary sudoku, which in our case has two simple rules:
•No column may contain the same value twice
•No row may contain the same value twice
If we assign each square in our sudoku to a variable like so:
1
V V₁
V3
V2
we want our circuit to output a solution to this sudoku.
Note that, while this approach of using Grover's algorithm to solve this problem is not practical (you can probably find the solution in your head!), the purpose of this example is to demonstrate the
conversion of classical decision problems into oracles for Grover's algorithm.
Turning the Problem into a Circuit
We want to create an oracle that will help us solve this problem, and we will start by creating a circuit that identifies a correct solution, we simply need to create a classical function on a quantum circuit
that…
using r language
Chapter 9 Solutions
The Essentials of Computer Organization and Architecture
Ch. 9 - Prob. 1RETCCh. 9 - Prob. 2RETCCh. 9 - Prob. 3RETCCh. 9 - Prob. 4RETCCh. 9 - Prob. 5RETCCh. 9 - Prob. 6RETCCh. 9 - Prob. 7RETCCh. 9 - Prob. 8RETCCh. 9 - Prob. 9RETCCh. 9 - Prob. 10RETC
Ch. 9 - Prob. 11RETCCh. 9 - Prob. 12RETCCh. 9 - Prob. 13RETCCh. 9 - Prob. 14RETCCh. 9 - Prob. 15RETCCh. 9 - Prob. 16RETCCh. 9 - Prob. 17RETCCh. 9 - Prob. 18RETCCh. 9 - Prob. 19RETCCh. 9 - Prob. 20RETCCh. 9 - Prob. 21RETCCh. 9 - Prob. 22RETCCh. 9 - Prob. 23RETCCh. 9 - Prob. 24RETCCh. 9 - Prob. 25RETCCh. 9 - Prob. 26RETCCh. 9 - Prob. 1ECh. 9 - Prob. 2ECh. 9 - Prob. 3ECh. 9 - Prob. 4ECh. 9 - Prob. 5ECh. 9 - Prob. 6ECh. 9 - Prob. 7ECh. 9 - Prob. 8ECh. 9 - Prob. 9ECh. 9 - Prob. 11ECh. 9 - Prob. 12ECh. 9 - Prob. 13ECh. 9 - Prob. 14ECh. 9 - Prob. 15ECh. 9 - Prob. 16ECh. 9 - Prob. 17ECh. 9 - Prob. 18ECh. 9 - Prob. 19ECh. 9 - Prob. 20ECh. 9 - Prob. 21ECh. 9 - Prob. 22ECh. 9 - Prob. 23ECh. 9 - Prob. 24ECh. 9 - Prob. 25ECh. 9 - Prob. 26ECh. 9 - Prob. 27ECh. 9 - Prob. 28ECh. 9 - Prob. 29ECh. 9 - Prob. 31ECh. 9 - Prob. 32ECh. 9 - Prob. 33E
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