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- Reservation_station abstract "Reservation station, also known as unified scheduler, is a decentralized feature of the microarchitecture of a CPU that allows for register renaming, and is used by the Tomasulo algorithm for dynamic instruction scheduling.Reservation stations permit the CPU to fetch and re-use a data value as soon as it has been computed, rather than waiting for it to be stored in a register and re-read. When instructions are issued, they can designate the reservation station from which they want their input to read. When multiple instructions need to write to the same register, all can proceed and only the (logically) last one need actually be written.It checks if the operands are available (RAW) and if execution unit is free (Structural hazard) before starting execution. Instructions are stored with available parameters, and executed when ready. Results are identified by the unit that will execute the corresponding instruction.Implicitly register renaming solves WAR and WAW hazards. Since this is a fully associative structure, it has a very high cost in comparators (need to compare all results returned from processing units with all stored addresses).In Tomasulo's algorithm, instructions are issued in sequence to Reservation Stations which buffer the instruction as well as the operands of the instruction. If the operand is not available, the Reservation Station listens on a Common Data Bus for the operand to become available. When the operand becomes available, the Reservation Station buffers it, and the execution of the instruction can begin.Functional Units (such as an adder or a multiplier), each have their own corresponding Reservation Station. The output of the Functional Unit connects to the Common Data Bus, where Reservation Stations are listening for the operands they need.".
- Reservation_station thumbnail Intel_Nehalem_arch.svg?width=300.
- Reservation_station wikiPageExternalLink books?id=v3-1hVwHnHwC&.
- Reservation_station wikiPageExternalLink 4_Tomasulo.pdf.
- Reservation_station wikiPageExternalLink tomasulo.pl?reserv-t.html,model-f.html,menu-app.html.
- Reservation_station wikiPageID "4543249".
- Reservation_station wikiPageLength "2848".
- Reservation_station wikiPageOutDegree "10".
- Reservation_station wikiPageRevisionID "637174091".
- Reservation_station wikiPageWikiLink Category:Instruction_processing.
- Reservation_station wikiPageWikiLink Central_processing_unit.
- Reservation_station wikiPageWikiLink Hazard_(computer_architecture).
- Reservation_station wikiPageWikiLink Microarchitecture.
- Reservation_station wikiPageWikiLink Register_renaming.
- Reservation_station wikiPageWikiLink Structural_hazard.
- Reservation_station wikiPageWikiLink Tomasulo_algorithm.
- Reservation_station wikiPageWikiLink File:Intel_Nehalem_arch.svg.
- Reservation_station wikiPageWikiLinkText "Reservation station".
- Reservation_station wikiPageWikiLinkText "reservation stations".
- Reservation_station hasPhotoCollection Reservation_station.
- Reservation_station wikiPageUsesTemplate Template:Comp-eng-stub.
- Reservation_station wikiPageUsesTemplate Template:Unreferenced.
- Reservation_station subject Category:Instruction_processing.
- Reservation_station hypernym Feature.
- Reservation_station type Work.
- Reservation_station comment "Reservation station, also known as unified scheduler, is a decentralized feature of the microarchitecture of a CPU that allows for register renaming, and is used by the Tomasulo algorithm for dynamic instruction scheduling.Reservation stations permit the CPU to fetch and re-use a data value as soon as it has been computed, rather than waiting for it to be stored in a register and re-read.".
- Reservation_station label "Reservation station".
- Reservation_station sameAs Reservation_station.
- Reservation_station sameAs Reservation_Station.
- Reservation_station sameAs m.0c80m5.
- Reservation_station sameAs Q1088863.
- Reservation_station sameAs Q1088863.
- Reservation_station sameAs 保留站.
- Reservation_station wasDerivedFrom Reservation_station?oldid=637174091.
- Reservation_station depiction Intel_Nehalem_arch.svg.
- Reservation_station isPrimaryTopicOf Reservation_station.
