Shared Memory Multi Processor
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The document discusses multicore and shared memory multiprocessors, highlighting the distinction between multicore processors and shared memory multiprocessor systems. It categorizes shared memory multiprocessors into uniform memory access (UMA), non-uniform memory access (NUMA), and cache-only memory access (COMA), detailing their architecture and interconnection methods. The document also covers specific types of NUMA, including non-caching NUMA and cache-coherent NUMA, along with their interconnection networks.
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Shared Memory Multi Processor
- 1. MULTICORE & SHARED MEMORY MULTIPROCESSORS
- 2. A single computing component with two or more independent processing units Multicore Processor Shared Memory Multiprocessor (SMP) Computer system composed of multiple independent processors that executes different instruction schemes
- 3. SHARED MEMORY MULTIPROCESSORS 1. Uniform Memory Access (UMA) 2. Non Uniform Memory Access (NUMA) 3. Cache Only Memory Access (COMA) 1. Non-Caching NUMA (NC-NUMA) 2. Cache-Coherent NUMA (CC-NUMA)
- 4. SHARED MEMORY MULTIPROCESSORS UNIFORM MEMORY ACCESS (UMA) Interconnect (Bus, Crossbar, Multistage network) Processor 1 Processor 2 Processor n I/O Shared Memory 1 Shared Memory n
- 5. SHARED MEMORY MULTIPROCESSORS NON-UNIFORM MEMORY ACCESS (NUMA) Processor 1 Processor 2 Processor n Local Memory 1 Local Memory 2 Local Memory n Interconnection Network
- 6. SHARED MEMORY MULTIPROCESSORS NON-UNIFORM MEMORY ACCESS (NUMA) 1. Non- Caching NUMA (NC-NUMA) MMU CPU Memory Local Bus System Bus MMU CPU Memory Local Bus MMU CPU Memory Local Bus
- 7. SHARED MEMORY MULTIPROCESSORS NON-UNIFORM MEMORY ACCESS (NUMA) 2. Cache-Coherent NUMA (CC-NUMA) Interconnection Network CPU Memory Local Bus Directory Node 0 CPU Memory Local Bus Directory Node 4 CPU Memory Local Bus Directory Node 255
- 8. SHARED MEMORY MULTIPROCESSORS CACHE ONLY MEMORY ACCESS (COMA) COMA is a special case of NUMA model. All the distributed main memories are converted to cache memories