Not to be confused with Overlay (programming) or Overlapping code.
Computer memory that can be accessed by multiple processes
An illustration of a shared memory system of three processors
In computer science, shared memory is memory that may be simultaneously accessed by multiple programs with an intent to provide communication among them or avoid redundant copies. Shared memory is an efficient means of passing data between programs. Depending on context, programs may run on a single processor or on multiple separate processors.
Using memory for communication inside a single program, e.g. among its multiple threads, is also referred to as shared memory.
system. Sharedmemory systems may use: uniform memory access (UMA): all the processors share the physical memory uniformly; non-uniform memory access (NUMA):...
distributed sharedmemory (DSM) is a form of memory architecture where physically separated memories can be addressed as a single shared address space...
computer architecture, shared graphics memory refers to a design where the graphics chip does not have its own dedicated memory, and instead shares the...
interaction are sharedmemory and message passing, but interaction can also be implicit (invisible to the programmer). Sharedmemory is an efficient means...
Symmetric multiprocessing or shared-memory multiprocessing (SMP) involves a multiprocessor computer hardware and software architecture where two or more...
though the memory allocated for specific processes is normally isolated, processes sometimes need to be able to share information. Sharedmemory is one of...
having to manage a sharedmemory space, ability to sharememory used by libraries between processes, increased security due to memory isolation, and being...
with one or more remote processors. In contrast, a sharedmemory multiprocessor offers a single memory space used by all processors. Processors do not have...
addresses in memory. Unified virtual memory (CUDA 4.0 and above) Unified memory (CUDA 6.0 and above) Sharedmemory – CUDA exposes a fast sharedmemory region...
Sharedmemory multiprocessor system Distributed memory multiprocessor system Uniform memory access (UMA) system cc–NUMA system Hybrid system – shared...
memory pool to contribute memory, and store and retrieve data. Management software and the technologies of memory overcommitment manage sharedmemory...
caches. In a sharedmemory multiprocessor system with a separate cache memory for each processor, it is possible to have many copies of shared data: one...
In computing, a memory address is a reference to a specific memory location used at various levels by software and hardware. Memory addresses are fixed-length...
Animal Well is an upcoming Metroidvania video game developed by SharedMemory and published by Bigmode. The player controls a blob and explores a labyrinth...
etc. Shared agenda, in groupware Shared computing Shared desktop Shared data structure Shared IP address Sharedmemory architecture Sharedmemory (interprocess...
concerning shared resource data Distributed sharedmemory – software and hardware implementations in which each cluster node accesses a large sharedmemoryPages...
make about the underlying memory architecture—sharedmemory, distributed memory, or shared distributed memory. Sharedmemory programming languages communicate...
shared memory concept, and MPI-2 has only a limited distributed sharedmemory concept. Nonetheless, MPI programs are regularly run on sharedmemory computers...
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