Starting Out with Programming Logic and Design (5th Edition) (What's New in Computer Science)
5th Edition
ISBN: 9780134801155
Author: Tony Gaddis
Publisher: PEARSON
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Chapter 8, Problem 2PE
Lottery Number Generator
Design a
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Q.1. Architecture performance [10 marks]
Answer
A certain microprocessor requires either 2, 4, or 6 machine cycles to perform various operations.
⚫ (40+g+f)% require 2 machine cycles,
⚫ (30-g) % require 4 machine cycles, and
⚫ (30-f)% require 6 machine cycles.
(a) What is the average number of machine cycles per instruction for this microprocessor?
Answer
(b) What is the clock rate (machine cycles per second) required for this microprocessor to be a
"1000 MIPS" processor?
Answer
(c) Suppose that 35% of the instructions require retrieving an operand from memory which
needs an extra 8 machine cycles. What is the average number of machine cycles per
instruction, including the instructions that fetch operands from memory?
Q.2. Architecture performance [25 marks]
Consider two different implementations, M1 and M2, of the same instruction set. M1 has a clock
rate of 2 GHz and M2 has a clock rate of 3.3 GHz. There are two classes of instructions with the
following CPIs:
Class
A
CPI for M1
CPI for M2
2.f
1.g
B
5
3
C
6
4
Note that the dots in 2 fand 1.g
indicate decimal points and not
multiplication.
a) What are the peak MIPS performances for both machines?
b) Which implementation is faster, if half the instructions executed in a certain program are from
class A, while the rest are divided equally among classes B and C.
c) What speedup factor for the execution of class-A instructions would lead to 20% overall
speedup?
d) What is the maximum possible speedup that can be achieved by only improving the execution
of class-A instructions? Explain why.
e) What is the clock rate required for microprocessor M1 to be a "1000 MIPS" (not peak MIPS)
processor?
Chapter 8 Solutions
Starting Out with Programming Logic and Design (5th Edition) (What's New in Computer Science)
Ch. 8.1 - Prob. 8.1CPCh. 8.1 - Prob. 8.2CPCh. 8.1 - Prob. 8.3CPCh. 8.1 - Prob. 8.4CPCh. 8.1 - Prob. 8.5CPCh. 8.1 - Prob. 8.6CPCh. 8.1 - Prob. 8.7CPCh. 8.1 - What does array bounds checking mean?Ch. 8.1 - Prob. 8.9CPCh. 8.2 - Prob. 8.10CP
Ch. 8.2 - Prob. 8.11CPCh. 8.2 - What does the loop do in the sequential search...Ch. 8.2 - Prob. 8.13CPCh. 8.2 - How do you look for a partial string match when...Ch. 8.3 - Prob. 8.15CPCh. 8.3 - Prob. 8.16CPCh. 8.3 - Describe the algorithm for finding the highest...Ch. 8.3 - Prob. 8.18CPCh. 8.3 - Prob. 8.19CPCh. 8.4 - Prob. 8.20CPCh. 8.4 - Prob. 8.21CPCh. 8.5 - Prob. 8.22CPCh. 8.5 - Write a pseudocode statement that assigns the...Ch. 8.5 - Prob. 8.24CPCh. 8.5 - Prob. 8.25CPCh. 8.6 - Prob. 8.26CPCh. 8 - Prob. 1MCCh. 8 - Prob. 2MCCh. 8 - This is an individual storage location in an...Ch. 8 - Prob. 4MCCh. 8 - Prob. 5MCCh. 8 - Prob. 6MCCh. 8 - Prob. 7MCCh. 8 - Prob. 8MCCh. 8 - Prob. 9MCCh. 8 - Prob. 10MCCh. 8 - Prob. 1TFCh. 8 - Prob. 2TFCh. 8 - Prob. 3TFCh. 8 - Prob. 4TFCh. 8 - Prob. 5TFCh. 8 - Prob. 1SACh. 8 - Prob. 2SACh. 8 - Look at the following pseudocode: Constant Integer...Ch. 8 - Prob. 4SACh. 8 - Prob. 5SACh. 8 - Prob. 1AWCh. 8 - Prob. 2AWCh. 8 - Prob. 3AWCh. 8 - Prob. 4AWCh. 8 - Prob. 5AWCh. 8 - Prob. 6AWCh. 8 - Assume the following declarations appear in a...Ch. 8 - Design an algorithm for a function that accepts an...Ch. 8 - Write a pseudocode algorithm that uses the For...Ch. 8 - Total Sales Design a program that asks the user to...Ch. 8 - Lottery Number Generator Design a program that...Ch. 8 - Prob. 3PECh. 8 - Prob. 4PECh. 8 - Charge Account Validation Design a program that...Ch. 8 - Days of Each Month Design a program that displays...Ch. 8 - Phone Number Lookup Design a program that has two...Ch. 8 - Payroll Design a program that uses the following...Ch. 8 - Drives License Exam The local drivers license...Ch. 8 - Saddle Points Design a program that has a...Ch. 8 - Tic-Tac-Toe Game Design a program that allows two...Ch. 8 - Lo Shu Magic Square The Lo Shu Magic Square is a...
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