MIMD

Multiple Instruction, Multiple Data Stream- MIMD

->Set of processors

->Simultaneously execute different 

     instruction sequences

->Different sets of data

->SMPs, clusters and NUMA systems

Hardware and Software

->Hardware

◦Serial: e.g., Pentium 4

◦Parallel: e.g., quad-core Xeon e5345

->Software

◦Sequential: e.g., matrix 

  multiplication

◦Concurrent: e.g., operating system

->Sequential/concurrent software 

     can run on serial/parallel  

     hardware

◦Challenge: making effective use of 

  parallel hardware

Multiprocessor

Architectures: Shared 

Memory

Shared memory multiprocessor

◦Hardware provides single physical
address space for all processors

◦Synchronize shared variables using locks

◦Memory access time

–SMP/UMA (uniform) vs. NUMA (nonuniform)


-Muhammad izzuddin bin abdul alim
-B031210175

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