计算机组织与结构—性能设计第八版答案-coa8e.pdfVIP

SOLUTIONS TO PRACTICE PROBLEMS COMPUTER ORGANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE EIGHTH EDITION WILLIAM STALLINGS Copyright 2009: William Stallings TABLE OF CONTENTS Chapter 2 Computer Evolution and Performance 3
 Chapter 3 Computer Function and Interconnection7
 Chapter 4 Cache Memory 9
 Chapter 5 Internal Memory 13
 Chapter 6 External Memory 14
 Chapter 7 Input/Output 15
 Chapter 8 Operating System Support 17
 Chapter 9 Computer Arithmetic19
 Chapter 10 Instruction Sets: Characteristics and Functions 21
 Chapter 11 Instruction Sets: Addressing Modes and Formats23
 Chapter 12 Processor Structure and Function 24
 Chapter 13 Reduced Instruction Set Computers 27
 Chapter 14 Instruction-Level Parallelism and Superscalar Processors30
 Chapter 15 Control Unit Operation32
 Chapter 17 Parallel Processing33
 Chapter 18 Multicore Computers 35
 Chapter 19 Number Systems36
 Chapter 20 Digital Logic 37
 Appendix B Assembly Language and Related Topics 38
 -2- CHAPTER 2 COMPUTER EVOLUTION AND PERFORMANCE 2.1 Fraction of CPU which gets enhanced = 30/100=0.30 Fraction of CPU in I/O activity = 60/100=0.60 Speed up for enhancement given = 10 Therefore, overall speed up is = 1 / (0.50 + (0.30/10)) = 1.889. 2.2 This question is about performance benchmarks for computer systems. It involves how rates of several programs of a benchmark suite are combined to give a single value. a. To combine rates of execution one must use a weighted harmonic mean. The WHM is defined as 1 WHM =