1CSE 120CSE 120Principles of Operating Principles of Operating SystemsSystemsFall 2004Fall 2004Lecture 1: Course IntroductionLecture 1: Course IntroductionGeoffrey M. VoelkerGeoffrey M. VoelkerSeptember 23, 2004 CSE 120 – Lecture 1 – Course Intro 2Lecture 1 OverviewLecture 1 Overviewz Class overviewz What is an operating system?z Operating system modules, interfaces2September 23, 2004 CSE 120 – Lecture 1 – Course Intro 3PersonnelPersonnelz Instructor: Geoff Voelker Office hours Mon/Wed afternoonz Discussion TA: Nan Zang Discussion Fri 11-11:50am in HSS 1330 Office hours TBD Homework graderz Project TA: Charles Lucas Lab hours TBD, email Project graderSeptember 23, 2004 CSE 120 – Lecture 1 – Course Intro 4CSE 120 Class OverviewCSE 120 Class Overviewz Course material taught through class lectures, textbook readings, and handoutsz Course assignments are Homework questions (mostly from the book) Three large programming projects in groupsz Discussion sections are a forum for asking questions Lecture material and homework Additional OS topics (e.g., how does an OS boot?) Mailing list ([email protected]) Discussion board (http://discus.ucsd.edu)3September 23, 2004 CSE 120 – Lecture 1 – Course Intro 5HomeworksHomeworksz There will be 4-5 homeworks throughout the quarter Reinforce lecture material…no better practicez Collaboration vs. cheating I encourage you to discuss homework problems with others» You can learn a lot from each other But there is a distinction between collaboration and cheating Rule of thumb: Discuss together in library, walk home, and write up answers independently Cheating is copying from other student’s homeworks or solution sets, searching for answers on the Web, etc. Suspicious homeworks will be flagged for review by meSeptember 23, 2004 CSE 120 – Lecture 1 – Course Intro 6TextbookTextbookz Silberschatz, Operating System Concepts, Wiley, 6th Edition (Windows XP Update) ISBN 0-471-25060-04September 23, 2004 CSE 120 – Lecture 1 – Course Intro 7NachosNachosz Nachos is an instructional operating system It is a user-level operating system and a machine simulator» Not unlike the Java runtime environment» Will become abundantly clear (or not so clear) very soon Programming environment will be C++ on Unix (Linux/Solaris) The projects will require serious time commitments» This is not an understatementz You will do three projects using Nachos (more later) Concurrency and synchronization Multiprogramming Virtual memory z You will work in groups of 1-4 on the projects Start identifying partners nowSeptember 23, 2004 CSE 120 – Lecture 1 – Course Intro 8LabsLabsz We will use the uAPE lab in the AP&M basement Solaris running on Sun sparc machinesz You can also use your home machine The same project source will work on Linux (but not Windows) We will test on uAPE machines Be sure to test your projects there as well5September 23, 2004 CSE 120 – Lecture 1 – Course Intro 9ExamsExamsz Midterm Thursday, October 28 Covers first half of classz Final Thursday, December 9 Covers second half of class + selected material from first part » I will be explicit about the material coveredz No makeup exams Unless dire circumstancesz Crib sheet You can bring one double-sided 8.5x11” page of notes to each exam to assist you in answering the questions Not a substitute for thinkingSeptember 23, 2004 CSE 120 – Lecture 1 – Course Intro 10GradingGradingz Homeworks: 15% Think of these collectively as a take-home midtermz Midterm: 25%z Final: 30%z Projects: 30%6September 23, 2004 CSE 120 – Lecture 1 – Course Intro 11How How NotNotTo Pass CSE 120To Pass CSE 120z Do not come to lecture It’s nice out, the slides are online, and the material is in thebook anyway Lecture material is the basis for exams and directly relates to the projectsz Do not do the homework It’s only 15% of the grade Excellent practice for the exams, and some homework problems are exercises for helping with the project 15% is actually a significant fraction of your grade (differencebetween an A and a C)September 23, 2004 CSE 120 – Lecture 1 – Course Intro 12How How NotNotTo Pass (2)To Pass (2)z Do not ask questions in lecture, office hours, or email It’s scary, I don’t want to embarrass myself Asking questions is the best way to clarify lecture material at the time it is being presented Office hours and email will help with homeworks, projectsz Wait until the last couple of days to start a project We’ll have to do the crunch anyways, why do it early? The projects cannot be done in the last couple of days Some groups last time learned that starting early meant finishing all of the projects on time…and some didn’t7September 23, 2004 CSE 120 – Lecture 1 – Course Intro 13Class Web PageClass Web Pagehttp://www.cse.ucsd.edu/classes/fa04/cse120/z Serves many roles… Course syllabus and schedule (updated as quarter progresses)» Lecture slides Homework handouts Project handouts (tons of info on Nachos, start now)z Supplemental readings on Unix, monitors, and threads e.g., seminal research paper describing the early Unix system FYI only, but you might find it interesting Concepts in paper might seem obvious and familiar, but they were new at one timeSeptember 23, 2004 CSE 120 – Lecture 1 – Course Intro 14QuestionsQuestionsz Before we start the material, any questions about the class structure, contents, etc.?8September 23, 2004 CSE 120 – Lecture 1 – Course Intro 15Why Operating Systems?Why Operating Systems?z Why are we making you sit here today, having to suffer through a core course in operating systems? It’s not like everyone will become OS developers, after allz Understand what you use Understanding how an OS works helps you develop apps System functionality, performance, efficiency, etc.z Pervasive abstractions Concurrency: Threads and synchronization are common modern programming abstractions (Java, .NET, etc.)z Complex software systems Many of you will go on to work on large software projects OSes serve as examples of an evolution of complex systemsSeptember 23, 2004 CSE 120 – Lecture 1 – Course Intro 16CSE 120 Course MaterialCSE 120 Course Materialz This course addresses classic OS concepts Services provided by the OS OS implementation on modern hardware
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