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• Scratchpad_memory abstract "Scratchpad memory (SPM), also known as scratchpad, scratchpad RAM or local store in computer terminology, is a high-speed internal memory used for temporary storage of calculations, data, and other work in progress. In reference to a microprocessor (\"CPU\"), scratchpad refers to a special high-speed memory circuit used to hold small items of data for rapid retrieval. It is similar to the usage and size of a scratchpad in life: a pad of paper for preliminary notes or sketches or writings, etc.It can be considered similar to the L1 cache in that it is the next closest memory to the ALU after the internal registers, with explicit instructions to move data to and from main memory, often using DMA-based data transfer. In contrast to a system that uses caches, a system with scratchpads is a system with Non-Uniform Memory Access latencies, because the memory access latencies to the different scratchpads and the main memory vary. Another difference from a system that employs caches is that a scratchpad commonly does not contain a copy of data that is also stored in the main memory.Scratchpads are employed for simplification of caching logic, and to guarantee a unit can work without main memory contention in a system employing multiple processors, especially in multiprocessor system-on-chip for embedded systems. They are mostly suited for storing temporary results (as it would be found in the CPU stack) that typically wouldn't need to always be committing to the main memory; however when fed by DMA, they can also be used in place of a cache for mirroring the state of slower main memory. The same issues of locality of reference apply in relation to efficiency of use; although some systems allow strided DMA to access rectangular data sets. Another difference is that scratchpads are explicitly manipulated by applications.Scratchpads are not used in mainstream desktop processors where generality is required for legacy software to run from generation to generation, in which the available on-chip memory size may change. They are better implemented in embedded systems, special-purpose processors and game consoles, where chips are often manufactured as MPSoC, and where software is often tuned to one hardware configuration.".
• Scratchpad_memory wikiPageExternalLink banakar-scratchpad.pdf.
• Scratchpad_memory wikiPageID "5164981".
• Scratchpad_memory wikiPageLength "9784".
• Scratchpad_memory wikiPageOutDegree "36".
• Scratchpad_memory wikiPageRevisionID "708306154".
• Scratchpad_memory wikiPageWikiLink Adapteva.
• Scratchpad_memory wikiPageWikiLink Arithmetic_logic_unit.
• Scratchpad_memory wikiPageWikiLink CPU_cache.
• Scratchpad_memory wikiPageWikiLink CUDA.
• Scratchpad_memory wikiPageWikiLink Category:Computer_memory.
• Scratchpad_memory wikiPageWikiLink Cell_(microprocessor).
• Scratchpad_memory wikiPageWikiLink Central_processing_unit.
• Scratchpad_memory wikiPageWikiLink Computer.
• Scratchpad_memory wikiPageWikiLink Computer_data_storage.
• Scratchpad_memory wikiPageWikiLink Coprocessor.
• Scratchpad_memory wikiPageWikiLink Cyrix_6x86.
• Scratchpad_memory wikiPageWikiLink Digital_signal_processor.
• Scratchpad_memory wikiPageWikiLink Direct_memory_access.
• Scratchpad_memory wikiPageWikiLink Electronic_circuit.
• Scratchpad_memory wikiPageWikiLink Emotion_Engine.
• Scratchpad_memory wikiPageWikiLink Fairchild_F8.
• Scratchpad_memory wikiPageWikiLink Fermi_(microarchitecture).
• Scratchpad_memory wikiPageWikiLink GeForce_400_series.
• Scratchpad_memory wikiPageWikiLink GeForce_8_series.
• Scratchpad_memory wikiPageWikiLink General-purpose_computing_on_graphics_processing_units.
• Scratchpad_memory wikiPageWikiLink Graphics_processing_unit.
• Scratchpad_memory wikiPageWikiLink Kibibyte.
• Scratchpad_memory wikiPageWikiLink Locality_of_reference.
• Scratchpad_memory wikiPageWikiLink MPSoC.
• Scratchpad_memory wikiPageWikiLink Microprocessor.
• Scratchpad_memory wikiPageWikiLink Network_on_a_chip.
• Scratchpad_memory wikiPageWikiLink Non-uniform_memory_access.
• Scratchpad_memory wikiPageWikiLink Physics_processing_unit.
• Scratchpad_memory wikiPageWikiLink PlayStation_(console).
• Scratchpad_memory wikiPageWikiLink PlayStation_2.
• Scratchpad_memory wikiPageWikiLink R3000.
• Scratchpad_memory wikiPageWikiLink SuperH.
• Scratchpad_memory wikiPageWikiLink X86.
• Scratchpad_memory wikiPageWikiLink Xeon_Phi.
• Scratchpad_memory wikiPageWikiLinkText "Scratchpad memory".
• Scratchpad_memory wikiPageWikiLinkText "local memory".
• Scratchpad_memory wikiPageWikiLinkText "scratchpad memories".
• Scratchpad_memory wikiPageWikiLinkText "scratchpad memory".
• Scratchpad_memory wikiPageWikiLinkText "scratchpad".
• Scratchpad_memory wikiPageUsesTemplate Template:Refimprove.
• Scratchpad_memory wikiPageUsesTemplate Template:Reflist.
• Scratchpad_memory subject Category:Computer_memory.
• Scratchpad_memory hypernym Memory.
• Scratchpad_memory type Company.
• Scratchpad_memory type Array.
• Scratchpad_memory type Datum.
• Scratchpad_memory comment "Scratchpad memory (SPM), also known as scratchpad, scratchpad RAM or local store in computer terminology, is a high-speed internal memory used for temporary storage of calculations, data, and other work in progress. In reference to a microprocessor (\"CPU\"), scratchpad refers to a special high-speed memory circuit used to hold small items of data for rapid retrieval.".
• Scratchpad_memory label "Scratchpad memory".
• Scratchpad_memory sameAs Q3928159.
• Scratchpad_memory sameAs RAM_scratchpad.
• Scratchpad_memory sameAs m.0d5tlv.
• Scratchpad_memory sameAs Q3928159.
• Scratchpad_memory wasDerivedFrom Scratchpad_memory?oldid=708306154.
• Scratchpad_memory isPrimaryTopicOf Scratchpad_memory.