C How To Program, Global Edition
8th Edition
ISBN: 9781292110974
Author: Paul Deitel, Harvey Deitel
Publisher: PEARSON
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Textbook Question
Chapter 6, Problem 6.12E
Write loops that perform each of the following one-dimensional array operations:
- Initialize the 10 elements of integer array counts to zeros.
- Add 1 to each of the 15 elements of integer array bonus.
- Read the 12 values of floating-point array monthlyTemperatures from the keyboard.
- Print the five values of integer array bestScores in column format.
Expert Solution & Answer
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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 6 Solutions
C How To Program, Global Edition
Ch. 6 - Fill in the blanks in each of the following: C...Ch. 6 - State which of the following are true and which...Ch. 6 - Write statements to accomplish each of the...Ch. 6 - Consider a 2-by-5 integer array t. Write a...Ch. 6 - (Sales Commissions) Use a one-dimensional array to...Ch. 6 - (Bubble Sort) The bubble sort presented in Fig....Ch. 6 - Write loops that perform each of the following...Ch. 6 - Prob. 6.13ECh. 6 - (Mean, Median and Mode Program Modifications)...Ch. 6 - (Duplicate Elimination) Use a one-dimensional...
Ch. 6 - Label the elements of 3-by-5 two-dimensional array...Ch. 6 - What does the following program do?Ch. 6 - What does the following program do?Ch. 6 - (Dice Rolling) Write a program that simulates the...Ch. 6 - (Game of Craps) Write a program that runs 1000...Ch. 6 - Prob. 6.21ECh. 6 - (Total Sales) Use a two-dimensional array to solve...Ch. 6 - (Turtle Graphics) The Logo language made the...Ch. 6 - Prob. 6.24ECh. 6 - (Knights Tour: Brute-Force Approaches) In Exercise...Ch. 6 - (Eight Queens) Another puzzler for chess buffs is...Ch. 6 - (Eight Queens: Brute-Force Approaches) In this...Ch. 6 - (Duplicate Elimination) In Chapter 12, we explore...Ch. 6 - (Knights Tour: Closed Tour Test) In the Knights...Ch. 6 - (The Sieve of Eratosthenes) A prime integer is any...Ch. 6 - Prob. 6.31RECh. 6 - (Linear Search) Modify the program of Fig. 6.18 to...Ch. 6 - (Binary Search) Modify the program of Fig. 6.19 to...Ch. 6 - Prob. 6.35RECh. 6 - Prob. 6.36RECh. 6 - Prob. 6.37RE
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