Multiprocessors - Flynn’s taxonomy (1966)

• Single Instruction stream, Single Data stream (SISD)

  • Conventional uniprocessor

• Single Instruction stream, Multiple Data stream (SIMD)

  • Popular for some applications like image processing
  • One can construe vector processors to be of the SIMD type.
  • MMX extensions to ISA reflect the SIMD philosophy

• Multiple Instruction stream, Single Data stream (MISD)

  • Don’t know of any

• Multiple Instruction stream, Multiple Data stream (MIMD)

  • The most general

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