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CIT-603CIT-603Systems ProgrammingSystems ProgrammingGovt. Post Graduate College, Samanabad, FaisalabadGovt. Post Graduate College, Samanabad, Faisalabad

Lecture By: Khalid Mahmood

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Contents

Motivation Communication Grading, Policy on Cheating

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Motivation

Manage hardware Make it easier to use Powerful primitives Fancy interface Make use more efficient

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Motivation Basics of Systems Programming? What is an Operating System? What resource management and

allocation can an operating system do for my applications?

What do I need to know about operating systems for my first start up company?

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Communication

News for all non-personal communication.

E-mail: mkhalidmd@gmail.com or individual e-mail addresses.

Office Hours – To be arranged

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Course Information Prerequisites: Operating Systems Student Responsibilities Laboratory Facilities Online Resources

lecture slides and videos News

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Grading Policy(subject to minor changes)

Final Exam 30% Midterm Exam 20% Midterm Exam 2 15% 10 Machine Problems 50% Bonus Points + 3% for attendance

and participation

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Grading

Exams, MPs and Quizzes : Individual Assignments unless otherwise stated

Late Policy: 2% an hour No late quizzes, one make up only

and on Doctor’s excuse 1 week for regrade requests

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Cheating Policy

Academic integrity Your work in this class must be your

own - we have a zero tolerance policy towards cheating of any kind and any student who cheats will get a failing grade in the course.

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Cheating Policy

Both the cheater and the student who aided the cheater will be held responsible for the cheating

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OS Examples

Linux NT VMWare

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Possible future MPs•Design your own web server•Write a simple device driver•Build a simple file system and integrate it with your own server•Use memory mapped files to build a simple VMware emulator•Study caches, context switching, and multithreading using VTunes performance monitor

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Exams

Mid TermMake Up

Dates to be mentioned…..

Final Dates to be mentioned…..

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Summary Start on Thursday with Chapter 1 Revise C++, Separate Compilation, Linking,

Make, Take Quiz Please think about what an OS does What would you like in an Operating

System? Visit the web site

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Introduction

Chapter 1

1.1 What is an operating system1.2 History of operating systems1.3 The operating system zoo1.4 Computer hardware review1.5 Operating system concepts1.6 System calls1.7 Operating system structure

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Introduction

A computer system consists of hardware system programs application programs

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What is an Operating System

It is an extended machine Hides the messy details which must be performed Presents user with a virtual machine, easier to use

It is a resource manager Each program gets time with the resource Each program gets space on the resource

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History of Operating Systems (1)

Early batch system bring cards to 1401 read cards to tape put tape on 7094 which does computing put tape on 1401 which prints output

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History of Operating Systems (2) First generation 1945 – 1955

vacuum tubes, plug boards Second generation 1955 - 1965

transistors, batch systems Third generation 1965 – 1980

ICs and multiprogramming Fourth generation 1980 – present

– personal computers

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History of Operating Systems (3)

Structure of a typical FMS job – 2nd generation

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History of Operating Systems (4)

Multiprogramming system – three jobs in memory – 3rd generation

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The Operating System Zoo

Mainframe operating systems Server operating systems Multiprocessor operating systems Personal computer operating systems Real-time operating systems Embedded operating systems Smart card operating systems

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Computer Hardware Review (1)

Components of a simple personal computer

Monitor

Bus

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Computer Hardware Review (2)

(a) A three-stage pipeline(b) A superscalar CPU

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Computer Hardware Review (3)

Typical memory hierarchy– numbers shown are rough approximations

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Computer Hardware Review (4)

Structure of a disk drive

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Computer Hardware Review (5)

One base-limit pair and two base-limit pairs

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Summary

An Operating System is an extended machine a resource manager