Parallelism

Types

• Instruction Level
  • Pipelining
• Thread Level
  • Multithreading
  • Extended using Multicore Parallelism
• Data Level
  • Perform identical operation on lots of data
  • Data Level Parallelism

Levels

• SISD (single instruction single data)
  • Uniprocesessors
• MISD (multiple instruction single data)
  • Multiple processors on a single data stream
  • Not used
• SIMD (single instruction multiple data)
  • Simple programming model, low overhaed, and flexibility
  • Used In Data Level Parallelism
  • All custom integrated circuits
• MIMD (multiple instruction multiple data)
  • Multicore Parallelism
  • Flexible
  • Use off the shelf microprocessors