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An illustration of a distributed memory system of three computers.
In computer science, distributed memory refers to a multiprocessor computer system in which each processor has its own private memory.[1] 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.
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using dual-ported memories. The key issue in programming distributedmemory systems is how to distribute the data over the memories. Depending on the...
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In computer science, distributed shared memory (DSM) is a form of memory architecture where physically separated memories can be addressed as a single...
Distributed computing is a field of computer science that studies distributed systems, defined as computer systems whose inter-communicating components...
Heterogeneous multiprocessor system Shared memory multiprocessor system Distributedmemory multiprocessor system Uniform memory access (UMA) system cc–NUMA system...
shared memory are distributedmemory and distributed shared memory, each having a similar set of issues. In computer software, shared memory is either...
for platforms working on shared memory as well as algorithms which are well suited for platforms using distributedmemory, relying on message passing as...
discussion came a Workshop on Standards for Message Passing in a DistributedMemory Environment, held on April 29–30, 1992 in Williamsburg, Virginia....
function as a working set for distributed programs that offers a (deliberately) restricted form of distributed shared memory. Inside Apache Spark the workflow...
{\displaystyle i} . In contrast to the PRAM-algorithm, in the distributedmemory model, memory is not shared between processing units and data has to be exchanged...
sufficient amount of memory bandwidth exists. A distributed computer (also known as a distributedmemory multiprocessor) is a distributedmemory computer system...
Convolution Algebra for Compositional Distributed Representations" (PDF). IJCAI. Kanerva, Pentti (1988). Sparse distributedmemory. MIT press. ISBN 9780262111324...
interconnects. They are often classified as one of the three main types of distributedmemory programming, the other two being data parallel and message passing...
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communications sub-system is of foremost importance for a distributed OS. In a distributed OS, the kernel often supports a minimal set of functions, including...
and CMOS design of the SV1, the highly scalable distributedmemory design of the T3E, and the high memory bandwidth and liquid cooling of the T90. The X1...
terms RAM, main memory, or primary storage. Archaic synonyms for main memory include core (for magnetic core memory) and store. Main memory operates at a...
(pronounced variously mem-cash-dee or mem-cashed) is a general-purpose distributedmemory-caching system. It is often used to speed up dynamic database-driven...
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