Introduction to Computer SystemsTeaching staffTextbooksCourse ComponentsGetting Help Policies: AssignmentsCheatingPolicies: GradingFacilitiesPrograms and Data (6)Performance (2)The Memory Hierarchy (2)Linking and Exceptional Control Flow (3) Virtual Memory (4) I/O, Networking, and Concurrency (6)Lab Rationale Autolab Web ServiceIntroduction to Computer SystemsTopics:Topics: Staff, text, and policies Lecture topics and assignments Lab rationale and infrastructure15-213 F ’09class01b.ppt15-213Fall 2008Majd F. SakrAugust 24, 2009* Slide Credits: Prof. David R. O’Hallaron–2–15-213, F’09Teaching staff Instructorsz Prof. Majd F. Sakrz Prof. Khaled A. Harras TA’sz Md. Shahriar HaqueCome talk to us anytime!(Or phone or send email)–3–15-213, F’09TextbooksRandal E. Bryant and David R. Randal E. Bryant and David R. OO’’HallaronHallaron, , “Computer Systems: A Programmer’s Perspective”, Prentice Hall 2003. http://csapp.cs.cmu.eduBrian Kernighan and Dennis Ritchie, Brian Kernighan and Dennis Ritchie, “The C Programming Language, Second Edition”, Prentice Hall, 1988–4–15-213, F’09Course ComponentsLecturesLectures Higher level conceptsRecitationsRecitations Applied concepts, important tools and skills for labs, clarification of lectures, exam coverageLabsLabs The heart of the course 1 or 2 weeks Provide in-depth understanding of an aspect of systems Programming and measurement–5–15-213, F’09Getting HelpClass Web PageClass Web Page http://www.qatar.cmu.edu/~msakr/15213-f09/ Copies of lectures, assignments, exams, solutions Clarifications to assignmentsMessage BoardMessage Board http://autolab.qatar.cmu.edu Clarifications to assignments, general discussion The only board your instructors will be monitoring (No blackboard or Andrew)Personal helpPersonal help Professors:z K. Harras, office hour, appt, or when door is open.z M. Sakr, office hour, appt, or when door is open. TAs: office hour, email, or appt.–6–15-213, F’09Policies: AssignmentsWork groupsWork groups You must work alone on all labs HandinsHandins Assignments due at 11:59pm Electronic handins using Autolab (no exceptions!).Makeup exams and assignmentsMakeup exams and assignments Only when necessary, but must make PRIOR arrangements with Prof. Sakr or Prof. Harras.Appealing gradesAppealing grades Within 7 days of due date or exam date. Labs: Talk to the lead person on the assignment Exams: Talk to Prof. Sakr or Prof. Harras.–7–15-213, F’09CheatingWhat is cheating?What is cheating? Sharing code: either by copying, retyping, looking at, or supplying a copy of a file. Coaching: helping your friend to write a lab, line by line.What is NOT cheating?What is NOT cheating? Helping others use systems or tools. Helping others with high-level design issues. Helping others debug their code.Penalty for cheating:Penalty for cheating: Removal from course with failing grade.Detection of cheating:Detection of cheating: We do check and our tools for doing this are much better than you think!–8–15-213, F’09Policies: GradingExams (40%)Exams (40%) Two in class exams (10% each) Final (20%) All exams are open book / open notes.Attendance & Participation (5%)Attendance & Participation (5%)Labs (55%)Labs (55%) 7 labs (6-12% each)Grading CharacteristicsGrading Characteristics Lab scores tend to be highz Serious handicap if you don’t hand a lab inz We offer generous redemption programs Tests typically have a wider range of scores–9–15-213, F’09FacilitiesLabs will use the Labs will use the unix.qatar.cmu.eduunix.qatar.cmu.eduserversservers Pentium Linux servers for CS 213 Your 123 accounts should still be valid.Getting help with the Getting help with the unixunixmachines:machines: See IT Please direct questions to your TA–10–15-213, F’09Programs and Data (6)TopicsTopics Bits operations, arithmetic, assembly language programs, representation of C control and data structures Includes aspects of architecture and compilers AssignmentsAssignments L1 (datalab): Manipulating bits L2 (bomblab): Defusing a binary bomb L3 (buflab): Hacking a buffer bomb–11–15-213, F’09Performance (2)TopicsTopics High level processor models, code optimization (control and data), measuring time on a computer Includes aspects of architecture, compilers, and OSAssignmentsAssignments L4 (perflab): Optimizing code performance–12–15-213, F’09The Memory Hierarchy (2)TopicsTopics Memory technology, memory hierarchy, caches, disks, locality Includes aspects of architecture and OS.AssignmentsAssignments L4 (perflab): Optimizing code performance–13–15-213, F’09Linking and Exceptional Control Flow (3)TopicsTopics Object files, static and dynamic linking, libraries, loading Hardware exceptions, processes, process control, Unix signals, nonlocal jumps Includes aspects of compilers, OS, and architectureAssignmentsAssignments L5 (tshlab): Writing your own shell with job control–14–15-213, F’09Virtual Memory (4)TopicsTopics Virtual memory, address translation, dynamic storage allocation Includes aspects of architecture and OSAssignmentsAssignments L6 (malloclab): Writing your own malloc package–15–15-213, F’09I/O, Networking, and Concurrency (6)TopicsTopics High level and low-level I/O, network programming, Internet services, Web servers concurrency, concurrent server design, threads, I/O multiplexing with select. Includes aspects of networking, OS, and architecture.AssignmentsAssignments L7 (proxylab): Writing your own Web proxy–16–15-213, F’09Lab Rationale Each lab should have a wellEach lab should have a well--defined goal such as defined goal such as solving a puzzle or winning a contest. solving a puzzle or winning a contest. Doing a lab should result in new skills and conceptsDoing a lab should result in new skills and conceptsWe try to use competition in a fun and healthy way.We try to use competition in a fun and healthy way. Set a reasonable threshhold for full credit. Post intermediate results (anonymized) on Web page for glory!–17–15-213, F’09Autolab Web ServiceLabs are provided by the Labs are provided by the AutolabAutolabsystemsystem Autograding handin system developed in 2003 by Dave O’Hallaron Apache Web server + Perl CGI programs Beta tested Fall
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