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Operating Systems: HW3 Review and Tips for Improvement

Review and feedback on recent HW3 submissions, discussing strengths, weaknesses, and areas for improvement in programming with C, emphasizing better code organization, testing strategies, and debugging with GDB.

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Operating Systems: HW3 Review and Tips for Improvement

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Presentation Transcript

  1. 451 Operating SystemsSection 8 May 21, 2009

  2. Agenda • HW 3 debrief • Story time with Mr. McElroy

  3. It hurts me too 

  4. HW 3 • I am still working on grading them… • Goal is to send you scores by Monday • Some people really understand programming in C…. and some people really do not 

  5. HW 3: The Good • Answers to the questions from the book were great. People really understood the questions and submitted nice and complete work. • Part 1: almost everyone nailed the semaphore implementation • Some people had perfect hw’s which is impressive because last week was so busy!

  6. HW 3: The Bad • Makefiles • Provide an “all” target • Clean up your code to eliminate annoying compiler warnings • Testing • Most people provided weak tests. They provided a sample program that used their test, not an actual test

  7. HW 3: The Ugly • Numerous segfaults, deadlocks, and heap corruption • Some people didn’t finish • Strange implementations**** where people overcomplicated the project

  8. Plug for GDB • Remember our suggestion to debug with GDB? • http://dirac.org/linux/gdb/

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