Types of parallelism
In 1966 Michael Flynn proposed a taxonomy of parallel programming models:
- SISD: Single Instruction stream, Single Data stream
- SIMD: Single Instruction stream, Multiple Data stream
- MISD: Multiple Instruction stream, Single Data Stream
- MIMD: Multiple Instruction stream, Multiple Data stream
This has not proven to be a completely satisfactory system. For example, it is possible for the same program to run in different categories during the same session, and the same hardware can be configured to operate in categories. In addition, experience with parallel systems has pointed out the need for additional models, including:
- Single Program, Multiple Data streams (SPMD)
- Multiple Programs, Single Data streams (MPMD)
- Task farming
- Data parallelism ...
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