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- Memory_barrier abstract "A memory barrier, also known as a membar, memory fence or fence instruction, is a type of barrier instruction that causes a central processing unit (CPU) or compiler to enforce an ordering constraint on memory operations issued before and after the barrier instruction. This typically means that operations issued prior to the barrier are guaranteed to be performed before operations issued after the barrier.Memory barriers are necessary because most modern CPUs employ performance optimizations that can result in out-of-order execution. This reordering of memory operations (loads and stores) normally goes unnoticed within a single thread of execution, but can cause unpredictable behaviour in concurrent programs and device drivers unless carefully controlled. The exact nature of an ordering constraint is hardware dependent and defined by the architecture's memory ordering model. Some architectures provide multiple barriers for enforcing different ordering constraints.Memory barriers are typically used when implementing low-level machine code that operates on memory shared by multiple devices. Such code includes synchronization primitives and lock-free data structures on multiprocessor systems, and device drivers that communicate with computer hardware.".
- Memory_barrier wikiPageExternalLink memory-barriers.txt.
- Memory_barrier wikiPageExternalLink HPL-2004-209.html.
- Memory_barrier wikiPageExternalLink 8211.
- Memory_barrier wikiPageExternalLink MPmem-barrier.mspx.
- Memory_barrier wikiPageExternalLink oss-compiler-barriers-176055.pdf.
- Memory_barrier wikiPageExternalLink oss-memory-barriers-fences-176056.pdf.
- Memory_barrier wikiPageExternalLink whymb.2010.07.23a.pdf.
- Memory_barrier wikiPageExternalLink 573436.
- Memory_barrier wikiPageID "728216".
- Memory_barrier wikiPageLength "12958".
- Memory_barrier wikiPageOutDegree "50".
- Memory_barrier wikiPageRevisionID "704246675".
- Memory_barrier wikiPageWikiLink .NET_Framework.
- Memory_barrier wikiPageWikiLink Abstraction_layer.
- Memory_barrier wikiPageWikiLink Application_programming_interface.
- Memory_barrier wikiPageWikiLink Barrier_(computer_science).
- Memory_barrier wikiPageWikiLink C++.
- Memory_barrier wikiPageWikiLink C++11.
- Memory_barrier wikiPageWikiLink C_(programming_language).
- Memory_barrier wikiPageWikiLink Cache_coherence.
- Memory_barrier wikiPageWikiLink Category:Computer_memory.
- Memory_barrier wikiPageWikiLink Category:Consistency_models.
- Memory_barrier wikiPageWikiLink Category:Instruction_processing.
- Memory_barrier wikiPageWikiLink Central_processing_unit.
- Memory_barrier wikiPageWikiLink Compiler.
- Memory_barrier wikiPageWikiLink Computer_hardware.
- Memory_barrier wikiPageWikiLink Concurrent_computing.
- Memory_barrier wikiPageWikiLink Device_driver.
- Memory_barrier wikiPageWikiLink Double-checked_locking.
- Memory_barrier wikiPageWikiLink GNU_Compiler_Collection.
- Memory_barrier wikiPageWikiLink output.
- Memory_barrier wikiPageWikiLink Instruction_set.
- Memory_barrier wikiPageWikiLink Itanium.
- Memory_barrier wikiPageWikiLink Java_(programming_language).
- Memory_barrier wikiPageWikiLink Java_memory_model.
- Memory_barrier wikiPageWikiLink Language_primitive.
- Memory_barrier wikiPageWikiLink Machine_code.
- Memory_barrier wikiPageWikiLink O.
- Memory_barrier wikiPageWikiLink Memory_model_(programming).
- Memory_barrier wikiPageWikiLink Memory_ordering.
- Memory_barrier wikiPageWikiLink Multiprocessing.
- Memory_barrier wikiPageWikiLink Mutual_exclusion.
- Memory_barrier wikiPageWikiLink Non-blocking_algorithm.
- Memory_barrier wikiPageWikiLink Opcode.
- Memory_barrier wikiPageWikiLink Out-of-order_execution.
- Memory_barrier wikiPageWikiLink POSIX_Threads.
- Memory_barrier wikiPageWikiLink Random-access_memory.
- Memory_barrier wikiPageWikiLink Semantics.
- Memory_barrier wikiPageWikiLink Semaphore_(programming).
- Memory_barrier wikiPageWikiLink Synchronization_(computer_science).
- Memory_barrier wikiPageWikiLink Thread_(computing).
- Memory_barrier wikiPageWikiLink Windows_API.
- Memory_barrier wikiPageWikiLink X86_instruction_listings.
- Memory_barrier wikiPageWikiLinkText "Memory barrier".
- Memory_barrier wikiPageWikiLinkText "barriers".
- Memory_barrier wikiPageWikiLinkText "memory barrier instructions".
- Memory_barrier wikiPageWikiLinkText "memory barrier".
- Memory_barrier wikiPageWikiLinkText "memory barriers".
- Memory_barrier wikiPageUsesTemplate Template:More_footnotes.
- Memory_barrier wikiPageUsesTemplate Template:Portal.
- Memory_barrier wikiPageUsesTemplate Template:Reflist.
- Memory_barrier wikiPageUsesTemplate Template:See_also.
- Memory_barrier subject Category:Computer_memory.
- Memory_barrier subject Category:Consistency_models.
- Memory_barrier subject Category:Instruction_processing.
- Memory_barrier hypernym Instruction.
- Memory_barrier type Model.
- Memory_barrier type ProgrammingLanguage.
- Memory_barrier type Array.
- Memory_barrier type Datum.
- Memory_barrier type Model.
- Memory_barrier type Thing.
- Memory_barrier comment "A memory barrier, also known as a membar, memory fence or fence instruction, is a type of barrier instruction that causes a central processing unit (CPU) or compiler to enforce an ordering constraint on memory operations issued before and after the barrier instruction.".
- Memory_barrier label "Memory barrier".
- Memory_barrier seeAlso Memory_model_(programming).
- Memory_barrier sameAs Q875051.
- Memory_barrier sameAs メモリバリア.
- Memory_barrier sameAs 메모리_배리어.
- Memory_barrier sameAs Bariera_pamięci.
- Memory_barrier sameAs m.0365l2.
- Memory_barrier sameAs Q875051.
- Memory_barrier sameAs 内存屏障.
- Memory_barrier wasDerivedFrom Memory_barrier?oldid=704246675.
- Memory_barrier isPrimaryTopicOf Memory_barrier.