About: Memory access pattern

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In computing, a memory access pattern or IO access pattern is the pattern with which a system or program reads and writes memory on secondary storage. These patterns differ in the level of locality of reference and drastically affect cache performance, and also have implications for the approach to parallelism and distribution of workload in shared memory systems. Further, cache coherency issues can affect multiprocessor performance, which means that certain memory access patterns place a ceiling on parallelism (which manycore approaches seek to break).

Attributes	Values
rdfs:label	Speicherzugriff (de) Memory access pattern (en)
rdfs:comment	Als Speicherzugriff bezeichnet man in der Datenverarbeitung und Informatik den Datenaustausch mit einem Datenspeicher oder einer Datenstruktur. Die Art und Weise des Speicherzugriffs wird als Zugriffsart bezeichnet. (de) In computing, a memory access pattern or IO access pattern is the pattern with which a system or program reads and writes memory on secondary storage. These patterns differ in the level of locality of reference and drastically affect cache performance, and also have implications for the approach to parallelism and distribution of workload in shared memory systems. Further, cache coherency issues can affect multiprocessor performance, which means that certain memory access patterns place a ceiling on parallelism (which manycore approaches seek to break). (en)
foaf:depiction
dcterms:subject	Computer performance Software optimization Computer data storage
Wikipage page ID	50783248 (xsd:integer)
Wikipage revision ID	1063844398 (xsd:integer)
Link from a Wikipage to another Wikipage	Processor register Encapsulation (computer programming) Memory address Morton order Torus network topology Computer performance Software optimization Computer data storage VTune GPU Compiler Gather-scatter (vector addressing) Linear algebra Cache (computing) Compute kernel Computer memory Computing Parallel computing Partitioned global address space Stride of an array Data-oriented design Data dependency Display list Locality of reference 3D rendering Direct memory access Gpgpu Higher-order function Template (C++) Loop tiling Pixel PlayStation 2 Scatter (vector addressing) Intel Advisor Rasterization Texture mapping Scan line Scratchpad memory Image processing Random access memory Manycore Sequential access Working set Inverse texture mapping Linear algebra libraries Texture map Texture space Secondary storage Forward texture mapping Frame buffer Parallelism (computing) Gather (vector addressing) Multiprocessor Main memory Processing element Object oriented Screen space Security (computing) Cache coherency Memory (computing) Multi-dimensional array Prefetching (computing) Shared memory system Tile based deferred rendering dbr:2D_array dbr:Pointer_chasing dbr:Privacy_(computing) dbr:Stride_(computing) dbr:Tiling_(computer_graphics)
sameAs	Memory access pattern Memory access pattern Memory access pattern
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thumbnail	wiki-commons:Special:FilePath/Random_vs_sequential_access.svg?width=300
has abstract	Als Speicherzugriff bezeichnet man in der Datenverarbeitung und Informatik den Datenaustausch mit einem Datenspeicher oder einer Datenstruktur. Die Art und Weise des Speicherzugriffs wird als Zugriffsart bezeichnet. (de) In computing, a memory access pattern or IO access pattern is the pattern with which a system or program reads and writes memory on secondary storage. These patterns differ in the level of locality of reference and drastically affect cache performance, and also have implications for the approach to parallelism and distribution of workload in shared memory systems. Further, cache coherency issues can affect multiprocessor performance, which means that certain memory access patterns place a ceiling on parallelism (which manycore approaches seek to break). Computer memory is usually described as "random access", but traversals by software will still exhibit patterns that can be exploited for efficiency. Various tools exist to help system designers and programmers understand, analyse and improve the memory access pattern, including VTune and Vectorization Advisor, including tools to address GPU memory access patterns Memory access patterns also have implications for security, which motivates some to try and disguise a program's activity for reasons. (en)
prov:wasDerivedFrom	wikipedia-en:Memory_access_pattern?oldid=1063844398&ns=0
page length (characters) of wiki page	16731 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Memory_access_pattern
is Link from a Wikipage to another Wikipage of	Row hammer Gather/scatter (vector addressing) Out-of-order execution Glossary of computer graphics Glossary of computer hardware terms Live migration Cache control instruction Cache pollution Component (graph theory)

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