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University of Utah School of Computing

Summary: University of Utah
School of Computing
Shared Memory Multiprocessors
step 1: SMP's
Symmetric multiprocessor characteristics
· global physical address space
· ~ symmetric access to all memory from any processor
· each processor has it's own cache (1 or more levels)
· start with single level to simplify the initial discussion
· physically shared main memory
· hence easy to export shared memory programming model
· message passing model requires a thin software layer
· often faster than real message passing machines since OS isn't involved
Dominant parallel architecture today
· server class throughput engines
· PE count is modest = 2 to 128 processors
· 2 and 4-way SMP boards are relatively cheap
University of Utah
School of Computing


Source: Aboulhamid, El Mostapha - Département d'Informatique et recherche opérationnelle, Université de Montréal


Collections: Engineering