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Parallel Programming 0024

Parallel Programming 0024. Recitation Week 8 Spring Semester 2010. Today‘s program. Assignment 7 Assignment 8. Assignment 7. Discuss sample solution. Assignment 8. Mergesort with JCSP Dining philosophers with JCSP. Semaphores. Special Integer variable w/2 atomic operations

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Parallel Programming 0024

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  1. Parallel Programming0024 Recitation Week 8 Spring Semester 2010

  2. Today‘s program • Assignment 7 • Assignment 8

  3. Assignment 7 Discuss sample solution

  4. Assignment 8 Mergesort with JCSP Dining philosophers with JCSP

  5. Semaphores Special Integer variable w/2 atomic operations • P() (Passeren, wait/up) • V() (Vrijgeven/Verhogen, signal/down) Map into JCSP by defining a semaphore process

  6. Semaphores in JCSP Semaphore CSProcess Two channels for P, V Two + Two channels P – request/confirm V – request/confirm

  7. Dining philosophers Strategies to avoid deadlock SecurityGuard – limits entry to dining hall Asymmetric philosophers …

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