William Stallings Computer Organization and Architecture 6th Edition- Chapter 18: Parallel Processing includes Multiple Processor Organization, Single Instruction, Single Data Stream, Taxonomy of Parallel Processor, Tightly Coupled - SMP. | William Stallings Computer Organization and Architecture 6th Edition Chapter 18 Parallel Processing (Sec. , , , ) Multiple Processor Organization • • • • Single instruction, single data stream - SISD Single instruction, multiple data stream - SIMD Multiple instruction, single data stream - MISD Multiple instruction, multiple data stream- MIMD Single Instruction, Single Data Stream SISD • • • • Single processor Single instruction stream Data stored in single memory Uni-processor Single Instruction, Multiple Data Stream - SIMD • • • • • Single machine instruction Controls simultaneous execution Number of processing elements Lockstep basis Each processing element has associated data memory • Each instruction executed on different set of data by different processors • Vector and array processors Multiple Instruction, Single Data Stream - MISD • Sequence of data • Transmitted to set of processors • Each processor executes different instruction sequence • Never been .