What does instruction prefetch mean?

Definitions for instruction prefetch
in·struc·tion prefetch

This dictionary definitions page includes all the possible meanings, example usage and translations of the word instruction prefetch.


  1. instruction prefetch

    Cache prefetching is a technique used by computer processors to boost execution performance by fetching instructions or data from their original storage in slower memory to a faster local memory before it is actually needed (hence the term 'prefetch'). Most modern computer processors have fast and local cache memory in which prefetched data is held until it is required. The source for the prefetch operation is usually main memory. Because of their design, accessing cache memories is typically much faster than accessing main memory, so prefetching data and then accessing it from caches is usually many orders of magnitude faster than accessing it directly from main memory. Prefetching can be done with non-blocking cache control instructions.


  1. instruction prefetch

    Instruction prefetch refers to the technique in computer architecture where the processor predicts and fetches instructions ahead of time into a cache or buffer before they are actually needed for execution. This aims to reduce the latency in fetching instructions from main memory and ensure a continuous and efficient flow of instructions to the processor. Prefetching can be based on various strategies, such as branch prediction, pattern detection, or statistical analysis, and it helps to improve overall performance by minimizing stalls and idle cycles in the instruction fetch stage of the processor pipeline.


  1. Instruction prefetch

    In computer architecture, instruction prefetch is a technique used in microprocessors to speed up the execution of a program by reducing wait states. Modern microprocessors are much faster than the memory where the program is kept, meaning that the program's instructions cannot be read fast enough to keep the microprocessor busy. Adding a cache can provide faster access to needed instructions. Prefetching occurs when a processor requests an instruction from main memory before it is actually needed. Once the instruction comes back from memory, it is placed in a cache. When an instruction is actually needed, the instruction can be accessed much more quickly from the cache than if it had to make a request from memory. Since programs are generally executed sequentially, performance is likely to be best when instructions are prefetched in program order. Alternatively, the prefetch may be part of a complex branch prediction algorithm, where the processor tries to anticipate the result of a calculation and fetch the right instructions in advance. In the case of dedicated hardware the prefetch can take advantage of the spatial coherence usually found in the texture mapping process. In this case, the prefetched data are not instructions, but texture elements that are candidates to be mapped on a polygon.

How to pronounce instruction prefetch?

How to say instruction prefetch in sign language?


  1. Chaldean Numerology

    The numerical value of instruction prefetch in Chaldean Numerology is: 9

  2. Pythagorean Numerology

    The numerical value of instruction prefetch in Pythagorean Numerology is: 9

Translations for instruction prefetch

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"instruction prefetch." Definitions.net. STANDS4 LLC, 2023. Web. 7 Dec. 2023. <https://www.definitions.net/definition/instruction+prefetch>.

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