distributed memory - definizione. Che cos'è distributed memory
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Cosa (chi) è distributed memory - definizione

Distributed memory multiprocessing

distributed memory         
<architecture> The kind of memory in a parallel processor where each processor has fast access to its own local memory and where to access another processor's memory it must send a message via the inter-processor network. Opposite: shared memory. (1995-03-22)
Sparse distributed memory         
MATHEMATICAL MODEL
User:OneThousandTwentyFour/Sparse Distributed Memory sandbox; Sparse Distributed Memory
Sparse distributed memory (SDM) is a mathematical model of human long-term memory introduced by Pentti Kanerva in 1988 while he was at NASA Ames Research Center. It is a generalized random-access memory (RAM) for long (e.
Distributed shared memory         
  • right
  • State diagram of a block of memory in a DSM. A block is "owned" if one of the nodes has the block in state EM.
  • Sequential invocations and responses in DSM
SOFTWARE AND HARDWARE IMPLEMENTATIONS IN WHICH EACH CLUSTER NODE ACCESSES A LARGE SHARED MEMORY
DGAS; Distributed global address space
In computer science, distributed shared memory (DSM) is a form of memory architecture where physically separated memories can be addressed as a single shared address space. The term "shared" does not mean that there is a single centralized memory, but that the address space is shared—i.

Wikipedia

Distributed memory

In computer science, distributed memory refers to a multiprocessor computer system in which each processor has its own private memory. Computational tasks can only operate on local data, and if remote data are required, the computational task must communicate with one or more remote processors. In contrast, a shared memory multiprocessor offers a single memory space used by all processors. Processors do not have to be aware where data resides, except that there may be performance penalties, and that race conditions are to be avoided.

In a distributed memory system there is typically a processor, a memory, and some form of interconnection that allows programs on each processor to interact with each other. The interconnect can be organised with point to point links or separate hardware can provide a switching network. The network topology is a key factor in determining how the multiprocessor machine scales. The links between nodes can be implemented using some standard network protocol (for example Ethernet), using bespoke network links (used in for example the transputer), or using dual-ported memories.