ee307_chapter_01 - COMPUTER ORGANIZATION AND D 5 Edition th...

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COMPUTER ORGANIZATION AND D The Hardware/Software Interface 5 th Edition Chapter 1 Computer Abstractions and Technology Dr. Abd-Elhamid M. Taha [email protected] Slides adapted from Patterson and Hennessy notes provided through publisher.
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Chapter 1 — Computer Abstractions and Technology — 2 The Computer Revolution Progress in computer technology Underpinned by Moore’s Law Makes novel applications feasible Computers in automobiles Cell phones Human genome project World Wide Web Search Engines Computers are pervasive § 1 . 1 I n t r o d u c t i o n
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Chapter 1 — Computer Abstractions and Technology — 3 Classes of Computers Personal computers General purpose, variety of software Subject to cost/performance tradeoff Server computers Network based High capacity, performance, reliability Range from small servers to building sized
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Classes of Computers Supercomputers High-end scientific and engineering calculations Highest capability but represent a small fraction of the overall computer market Embedded computers Hidden as components of systems Stringent power/performance/cost constraints Chapter 1 — Computer Abstractions and Technology — 4
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Chapter 1 — Computer Abstractions and Technology — 5 The PostPC Era
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The PostPC Era Chapter 1 — Computer Abstractions and Technology — 6 Personal Mobile Device (PMD) Battery operated Connects to the Internet Hundreds of dollars Smart phones, tablets, electronic glasses Cloud computing Warehouse Scale Computers (WSC) Software as a Service (SaaS) Portion of software run on a PMD and a portion run in the Cloud Amazon and Google
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Chapter 1 — Computer Abstractions and Technology — 7 What You Will Learn How programs are translated into the machine language And how the hardware executes them The hardware/software interface What determines program performance And how it can be improved How hardware designers improve performance What is parallel processing
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Chapter 1 — Computer Abstractions and Technology — 8 Understanding Performance Algorithm Determines number of operations executed Programming language, compiler, architecture Determine number of machine instructions executed per operation Processor and memory system Determine how fast instructions are executed I/O system (including OS) Determines how fast I/O operations are executed
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Eight Great Ideas Design for Moore’s Law Use abstraction to simplify design Make the common case fast Performance via parallelism Performance via pipelining Performance via prediction Hierarchy of memories Dependability via redundancy Chapter 1 — Computer Abstractions and Technology — 9 § 1 .
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