This syllabus is subject to change based on specific class needs, especially the schedule. Significant deviations will be discussed in class. Individual exceptions to the policies and schedule are granted only in cases of true emergency. Please make arrangements with me if an emergency arises.
Introduces basic operating system concepts including virtualization, memory management, process and thread management, concurrency, file systems, and process scheduling. Students will also gain hands-on experience with the C programming language and Unix-based operating systems via programming projects.
Possible topics include:
| Processes | Concurrent Data Structures |
| CPU Scheduling | Concurrency Bugs |
| Virtual Memory | I/O Devices |
| Free Space Management | Redundant Disk Arrays |
| Locks | File Systems |
The required course textbook is:
It is available online at http://pages.cs.wisc.edu/~remzi/OSTEP/.
Late assignments: You have each been allotted a total of 5 late days. You may apply these without any penalty to any project you see fit, with the exception that you may use at most 2 on any individual project. The whole point here is to give you some flexibility that allows for things like illnesses, long trips, and the like. I am unlikely to grant further extensions. Any projects turned in late will result in a 20% penalty per day.
Academic dishonesty: Monmouth College’s official policy on academic dishonesty can be found here. You are responsible for reading and complying with that policy.
In this course, any violation of the academic honesty policy will have varying consequences depending on the severity of the infraction as judged by the instructor. Minimally, a violation will result in an “F” or 0 points on the assignment in question. Additionally, the student’s course grade may be lowered by one letter grade. In severe cases, the student will be assigned a course grade of “F” and dismissed from the class. All cases of academic dishonesty must be reported to the Associate Dean who may decide to recommend further action to the Admissions and Academic Status Committee, including suspension or dismissal. It is assumed that students will educate themselves regarding what is considered to be academic dishonesty, so excuses or claims of ignorance will not mitigate the consequences of any violations
Collaboration: We encourage you to make use of the resources available to you – it is fine to seek help from a friend, tutor, instructor, internet, etc. However, copying of answers and any act worth of the label “cheating” is never permissible! In addition to listing your sources and collaborators, you should be producing your own writeup in your own words. By “your own words,” we mean you should be producing the text yourself, without some external aid. Verbatim copying of text is specifically disallowed, but so is taking a source and rearranging some phrases and changing some variable names to create a derivative version! Such behavior is definitely NOT “using your own words.” It does not matter if you helped contribute to this source text with others, since then you are still not the sole author of the text. The point of collaborating on an assignment is not to produce a jointly authored set of solutions, since that violates the course policies. Instead, it is to help you solve the problems, which sometimes involve a bit of creativity. After you have jointly come up with the ideas you need to solve the problems, though, you should part ways with your group and sit down to do the writing by yourself. I also advise against sharing the writeup you submit with others, since if someone else uses your text as a source for their own solution (with or without your permission), you will also be implicated in the violation of the academic integrity policy. In any case, if two nearly identical solutions are received, we have no way of tell which is the original, and the policy is to not award credit for either submission.
Electronic devices: Do not use your phone or other devices in class except where necessary. Any computer or tablet usage should be related to the course. If a device is not being used for Zoom or Socrative it should be put away and turned on silent. Other usage is rude and distracting to others.
General expectations: In short, I expect you to be respectful of others and take responsibility for your own learning. You are here to learn, so work hard and be professional.
Just attending class is not sufficient to truly learn the material. Read the text, use the resources available at Monmouth College, and go beyond the material.
If you miss class, you are responsible for everything covered on that day. College is, in some sense, your job. Take pride in creating quality work. Staple your assignments, label problems, and present your answers neatly and orderly.
Your job is to convince me that you have learned the material – show your work! Even if you do not know a particular answer, guide me through your thought process.
The weekly workload for this course will vary by student and over the semester, but on average should be about 12 hours per week. The follow table provides a rough estimate of the distribution of this time over different course components for a 16 week semester.
| Category | Amount | Final Grade Weight | Total Time | Time/Week (Hours) |
|---|---|---|---|---|
| Lectures | 55 | 10% (Participation) | - | 2.5 |
| Reading Quizzes | 6–10 | 10% | - | - |
| Projects | 3–5 | 40% | 64 | 5.5 |
| Exam Study | - | - | 27 | 1.5 |
| Exams | 3 | 40% | - | - |
| Reading+Unstructured Study | - | - | 2.5 | |
| 12 |
Your participation grade is based on a variety of activities. During class I will often make use of the Socrative (https://socrative.com) app, so you’ll need to install this on your phones. Participating in Socrative questions and with in-class group activities is required for a decent participation grade; an A includes asking questions either in class or in office hours.
Your final grade is based on a weighted average of particular assignment categories, with weights shown above. You can estimate your current grade based on your scores and these weights. You may always visit the instructor outside of class to discuss your current standing.
This courses uses a standard grading scale. Assignments and final grades will not be curved except in rare cases when its deemed necessary by the instructor. Percentage grades translate to letter grades as follows:
| Score | Grade |
|---|---|
| 94–100 | A |
| 90–93 | A- |
| 88–89 | B+ |
| 82–87 | B |
| 80–81 | B- |
| 78–79 | C+ |
| 72–77 | C |
| 70–71 | C- |
| 68–69 | D+ |
| 62–67 | D |
| 60–61 | D- |
| 0–59 | F |
You are always welcome to challenge a grade that you feel is unfair or calculated incorrectly. Mistakes made in your favor will never be corrected to lower your grade. Mistakes made not in your favor will be corrected. Basically, after the initial grading your score can only go up as the result of a challenge*.
You are always welcome to challenge a grade that you feel is unfair or calculated incorrectly. Mistakes made in your favor will never be corrected to lower your grade. Mistakes made not in your favor will be corrected. Basically, after the initial grading your score can only go up as the result of a challenge.
The following tentative calendar should give you a feel for how work is distributed throughout the semester. Assignments and events are listed in the week they are due or when they occur. This calendar is subject to change based on the circumstances of the course.
| Date | Topic | Assignment |
|---|---|---|
| Mon 01/09 (Week 1) | Operating Systems Overview | OSTEP 0, 1, 2 |
| Wed 01/11 | C Review | Tutorial, Project 1 |
| Fri 01/13 | C Exercises | |
| Mon 01/16 (Week 2) | CPU Virtualization: Limited Direct Execution | 3,4 |
| Wed 01/18 | Project 1 Questions; fork() | 5,6 |
| Fri 01/20 | Basic Scheduling Policies | 7 |
| Mon 01/23 (Week 3) | Project 1 Solutions | |
| Wed 01/25 | MLFQ | 8 |
| Fri 01/27 | Lottery Scheduling | 9,11, Project 2 |
| Mon 01/30 (Week 4) | Memory Virtualization | 12,13,14 |
| Wed 02/01 | Translation, Segmentation | 15,16 |
| Fri 02/03 | Quiz; Project 2 Questions | |
| Mon 02/06 (Week 5) | Project 2 Debugging | |
| Wed 02/08 | Intro to Paging | 18 |
| Fri 02/10 | TLBs | 19 |
| Mon 02/13 (Week 6) | Project 2 Solutions | |
| Wed 02/15 | Multi-level Page Tables | 20 |
| Fri 02/17 | Swapping, Replacement Policies | 21,22 |
| Mon 02/20 (Week 7) | Exam Review | |
| Wed 02/22 | Exam Review | |
| Fri 02/24 | Exam 1 | |
| Mon 02/27 (Week 8) | Exam Solutions; Intro to Concurrency | 25,26 |
| Wed 03/01 | Thread API and Locks | 27, Project 3 |
| (Fri 03/03) | (Exam day for 1st half-semester courses) | |
| (Mon 03/06 – Fri 03/10) | (Spring Break) | |
| Mon 03/13 (Week 9) | Concurrent Data Structures, Building Locks | 28, 29 |
| Wed 03/15 | Ticket Locks, Project 3 Overview | |
| Fri 03/17 | Locks with Queues | 30 |
| Mon 03/20 (Week 10) | Condition Variables | |
| Wed 03/22 | Producer/Consumer | |
| Fri 03/24 | Semaphores | 31 |
| Mon 03/27 (Week 11) | Project 3 Questions/Debug | |
| Wed 03/29 | Project 3 Questions/Debug | |
| Fri 03/31 | Concurrency Bugs | 32, 34 |
| Mon 04/03 (Week 12) | Project 3 Debugging | |
| Wed 04/05 | I/O Devices | 35,36 |
| (Fri 04/07) | (Easter Break) | |
| (Mon 04/10) (Week 13) | (Easter Break) | |
| Wed 04/12 | Disk Scheduling | 37 |
| Fri 04/14 | RAID | 38 |
| Mon 04/17 (Week 14) | More RAID | |
| Wed 04/19 | File Systems | 39, Project 4 |
| Fri 04/21 | File System Implementation | 40 |
| Mon 04/24 (Week 15) | Finish VSFS, Intro to FFS | 41 |
| Wed 04/26 | FFS | |
| Fri 04/28 | Journaling | 42 |
| Mon 05/01 (Week 16) | Project Questions | |
| Wed 05/03 | Exam Review | |
| Mon 05/08, 8:00 AM | Exam 3 (Final) |
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