Computer Science 335
Parallel Processing and High Performance Computing

Fall 2021, Siena College

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Agenda

• Announcements
  • lab/project grading update
  • Lab 9: Introduction to pthreads due tomorrow afternoon
  • Final Project topic discussion and and group formation
• POSIX threads
  • A brief review of critical sections
  • Mutual exclusion with pthreads
  • Barrier synchronization with pthreads
• Programming Project 4: Pthreads Programming introduction
• Remaining time to work on Lab 9: Introduction to pthreads and/or get started on Programming Project 4: Pthreads Programming

Terminology

• POSIX threads/pthreads
• race condition
• interference
• synchronization
• atomic
• critical section
• mutual exclusion (mutex)

Examples

• pthread-mutex: a mutex to account for a critical section