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- Address_generation_unit abstract "Address generation unit (AGU), sometimes also called address computation unit (ACU), is an execution unit inside central processing units (CPUs) that calculates addresses used by the CPU to access main memory. By having address calculations handled by separate circuitry that operates in parallel with the rest of the CPU, the number of CPU cycles required for executing various machine instructions can be reduced, bringing performance improvements.While performing various operations, CPUs need to calculate memory addresses required for fetching data from the memory; for example, in-memory positions of array elements must be calculated before the CPU can fetch the data from actual memory locations. Those address-generation calculations involve different integer arithmetic operations, such as addition, subtraction, modulo operations, or bit shifts. Often, calculating a memory address involves more than one general-purpose machine instruction, which do not necessarily decode and execute quickly. By incorporating an AGU into a CPU design, together with introducing specialized instructions that use the AGU, various address-generation calculations can be offloaded from the rest of the CPU, and can often be executed quickly in a single CPU cycle.Capabilities of an AGU depend on a particular CPU and its architecture. Thus, some AGUs implement and expose more address-calculation operations, while some also include more advanced specialized instructions that can operate on multiple operands at a time. Furthermore, some CPU architectures include multiple AGUs so more than one address-calculation operation can be executed simultaneously, bringing further performance improvements by capitalizing on the superscalar nature of advanced CPU designs. For example, Intel incorporates multiple AGUs into its Sandy Bridge and Haswell microarchitectures, which increase bandwidth of the CPU memory subsystem by allowing multiple memory-access instructions to be executed in parallel.".
- Address_generation_unit thumbnail Intel_Nehalem_arch.svg?width=300.
- Address_generation_unit wikiPageExternalLink DSP56000FM04.pdf.
- Address_generation_unit wikiPageExternalLink page=44.
- Address_generation_unit wikiPageExternalLink IJCSE11-03-11-125.pdf.
- Address_generation_unit wikiPageExternalLink 08-AGU.pdf.
- Address_generation_unit wikiPageID "44634351".
- Address_generation_unit wikiPageLength "5798".
- Address_generation_unit wikiPageOutDegree "25".
- Address_generation_unit wikiPageRevisionID "681331102".
- Address_generation_unit wikiPageWikiLink Arithmetic_logic_unit.
- Address_generation_unit wikiPageWikiLink Array_data_structure.
- Address_generation_unit wikiPageWikiLink Array_element.
- Address_generation_unit wikiPageWikiLink Bit_shift.
- Address_generation_unit wikiPageWikiLink Bitwise_operation.
- Address_generation_unit wikiPageWikiLink Bulldozer_(microarchitecture).
- Address_generation_unit wikiPageWikiLink CPU_cycle.
- Address_generation_unit wikiPageWikiLink Category:Central_processing_unit.
- Address_generation_unit wikiPageWikiLink Category:Instruction_processing.
- Address_generation_unit wikiPageWikiLink Central_processing_unit.
- Address_generation_unit wikiPageWikiLink Computer_architecture.
- Address_generation_unit wikiPageWikiLink Computer_data_storage.
- Address_generation_unit wikiPageWikiLink Execution_unit.
- Address_generation_unit wikiPageWikiLink Haswell_(microarchitecture).
- Address_generation_unit wikiPageWikiLink Instruction_cycle.
- Address_generation_unit wikiPageWikiLink Integer_arithmetic_operation.
- Address_generation_unit wikiPageWikiLink Intel.
- Address_generation_unit wikiPageWikiLink Machine_code.
- Address_generation_unit wikiPageWikiLink Machine_instruction.
- Address_generation_unit wikiPageWikiLink Main_memory.
- Address_generation_unit wikiPageWikiLink Memory_address.
- Address_generation_unit wikiPageWikiLink Microarchitecture.
- Address_generation_unit wikiPageWikiLink Modulo_operation.
- Address_generation_unit wikiPageWikiLink Operand.
- Address_generation_unit wikiPageWikiLink Register_renaming.
- Address_generation_unit wikiPageWikiLink Reservation_station.
- Address_generation_unit wikiPageWikiLink Sandy_Bridge.
- Address_generation_unit wikiPageWikiLink Sandy_Bridge_(microarchitecture).
- Address_generation_unit wikiPageWikiLink Superscalar.
- Address_generation_unit wikiPageWikiLink Superscalar_processor.
- Address_generation_unit wikiPageWikiLink File:Intel_Nehalem_arch.svg.
- Address_generation_unit wikiPageWikiLinkText "AGU".
- Address_generation_unit wikiPageWikiLinkText "Address generation unit".
- Address_generation_unit wikiPageWikiLinkText "address generation unit".
- Address_generation_unit hasPhotoCollection Address_generation_unit.
- Address_generation_unit wikiPageUsesTemplate Template:Basic_computer_components.
- Address_generation_unit wikiPageUsesTemplate Template:CPU_technologies.
- Address_generation_unit wikiPageUsesTemplate Template:Commons_category.
- Address_generation_unit wikiPageUsesTemplate Template:Portal.
- Address_generation_unit wikiPageUsesTemplate Template:Reflist.
- Address_generation_unit wikiPageUsesTemplate Template:Snd.
- Address_generation_unit wikiPageUsesTemplate Template:Use_mdy_dates.
- Address_generation_unit subject Category:Central_processing_unit.
- Address_generation_unit subject Category:Instruction_processing.
- Address_generation_unit hypernym Unit.
- Address_generation_unit type Organisation.
- Address_generation_unit comment "Address generation unit (AGU), sometimes also called address computation unit (ACU), is an execution unit inside central processing units (CPUs) that calculates addresses used by the CPU to access main memory.".
- Address_generation_unit label "Address generation unit".
- Address_generation_unit sameAs Unidad_de_generación_de_direcciones.
- Address_generation_unit sameAs m.012fx5l_.
- Address_generation_unit sameAs Q19851307.
- Address_generation_unit sameAs Q19851307.
- Address_generation_unit wasDerivedFrom Address_generation_unit?oldid=681331102.
- Address_generation_unit depiction Intel_Nehalem_arch.svg.
- Address_generation_unit isPrimaryTopicOf Address_generation_unit.