1. W4118 Operating Systems Junfeng Yang

2. What this course is about  Fundamental OS concepts  OS: one of the most crucial, almost everything thru OS  What? Functionality? How?  Processes, threads, synchronization, scheduling, file systems …  Many concepts wide use  broad picture: how everything works together, hardware, programming language, algorithms …  Hands on experience learning and hacking a real OS (Linux)  Skills + concepts  Probably your first course dealing with large software  how to read, know, filter, modify, debug complex systems  Team work

3. Basic Info  Course webpage: google W4118 + yang  http://www.cs.columbia.edu/~junfeng/09sp-w4118/  3 units, heavy, but worth it  “ most useful after graduating”  Pre-requisite: good C, some Unix programming, computer organization  W3137 Data Structures and Algorithms  W3157 Advanced Programming  W3827 Fundamentals of Computer Systems

4. Basic Info (cont.)  Materials  Operating System Concepts, 8 th Edition  Understanding the Linux Kernel, 3 rd Edition  Additional materials will be made available online  You need a CS account; all programming assignments must compile on CLIC or VM. Apply ASAP  Discussions, grades, homework submissions:  https://courseworks.columbia.edu/  Staff mailing list: w4118spr09@lists.cs

5. Staff  Instructor: Junfeng Yang, 460 CSB, office hours TR 5:30-6:30, start next week  Main research area: OS, reliability, bug-finding  Hacked Linux and Windows, found some of the worst bugs. (e.g. all your files gone!)  Cool projects available for project students  TAs  Supreeth Subramanya  Yunling Wang  We’re getting one more

6. Format  Lectures: alternate between concepts and Linux case studies  Six assignments: best five, 50% of grades,  Each assignment: written + programming  First programming assignment: warm up  The other five: Linux kernel hacking  Start early!  Two exam  Midterm: 20%  Final: cumulative, 30%

7. Policies  Homework  No extension, late = 0  Submit electronically through CourseWorks  Multiple submission okay (timestamped), last counts  Partially complete homework okay  Grading  Follow the procedure  Programming  Code must compile and run on CLIC or VM  Collaboration/Copy  Encourage collaboration  Copying code is strictly prohibited: report to school