Socket Programming

Threads

• A way to execute multiple concurrent flows of control within a single process
• Linux
  • Threads are implemented as kernel tasks that share resources
  • Each threads get their own TID (Thread ID)
  • All threads in a process share PID
  • Thread groups manage resource sharing and accounting
• IO bounded
  • sending back and forth and not doing much computation
• CPU bounded

Python Threads

Feature	Posix Threads	Python Threads

CPU vs IO Bound Operations

• Matrix multiplication (CPU bound)
• Sorting (CPU bound)
• Sums (IO bound)
• Random Subset sums (IO bound)

[!NOTE] Even though python cpu uses a lock it does not remove race conditions because thread operations are not atomic, meaning that they lock and unlock but each thread is not critical. A --- B --- A --- B A wont finish before B is called, they just do not run in parallel

ssh-keygen -t rsa -b 4096