What is Distributed Shared Memory in Computer System?
Technology & Science / May 2, 2018

In parallel and distributed applications there are two common programming models for inter-process communication: shared memory and message passing. Shared memory has been the standard for tightly-coupled systems (multiprocessors), where the processors have uniform access to a single global memory. A large progress was recently made in the research and development of systems with multiple processors, capable of delivering high computing power in order to satisfy the constantly increasing demands of typical applications. Overview of Distributed Shared Memory Distributed shared memory (DSM) systems simplify the task of writing distributedmemory parallel programs by automating data distribution and communication. Unfortunately, DSM systems control memory and communication using fixed policies, even when programmers or compilers could manage these resources more efficiently. Distributed shared memory is an attempt to merge the ease of programming of shared memory, with the scalability of distributed memory architectures. Hiding the distribution aspects of an architecture for the programmer eases programming and especially porting existing, applications. DSM systems exist in a large number and with very varying behavior. Distributed shared memory (DSM) is an abstraction used for sharing data between computers that do not share physical memory. Processes access DSM by reads and updates to what appears to be…

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