Search results
Results from the WOW.Com Content Network
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.e., the same physical address on two processors refers to ...
The advantage of (distributed) shared memory is that it offers a unified address space in which all data can be found. The advantage of distributed memory is that it excludes race conditions, and that it forces the programmer to think about data distribution.
HSA defines a special case of memory sharing, where the MMU of the CPU and the IOMMU of the GPU have an identical pageable virtual address space.. In computer hardware, shared memory refers to a (typically large) block of random access memory (RAM) that can be accessed by several different central processing units (CPUs) in a multiprocessor computer system.
cc-NUMA is also called "distributed shared memory" (DSM) architecture. [11] The difference in access times between local and remote memory can be also an order of magnitude, depending on the kind of connection network used (faster in segmented bus, crossbar, and point-to-point interconnection; slower in serial rings connection).
Directory-based coherence is a mechanism to handle cache coherence problem in distributed shared memory (DSM) a.k.a. non-uniform memory access (NUMA). Another popular way is to use a special type of computer bus between all the nodes as a "shared bus" (a.k.a. system bus). [1]
A shared-memory architecture (SM) is a distributed computing architecture in which the nodes share the same memory as well as the same storage. [1]It contrasts with shared-nothing architecture, in which each node has distinct memory and storage, and with shared-disk architecture, in which the nodes share the same storage but not the same memory.
Diagram of a symmetric multiprocessing system. Symmetric multiprocessing or shared-memory multiprocessing [1] (SMP) involves a multiprocessor computer hardware and software architecture where two or more identical processors are connected to a single, shared main memory, have full access to all input and output devices, and are controlled by a single operating system instance that treats all ...
Whether these CPUs share resources or not determines a first distinction between three types of architecture: Shared memory; Shared disk; Shared nothing. Distributed programming typically falls into one of several basic architectures: client–server, three-tier, n-tier, or peer-to-peer; or categories: loose coupling, or tight coupling. [36]