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Data prefetching method and device

A data prefetching and prefetching technology, applied in the fields of electrical digital data processing, climate sustainability, instruments, etc., can solve the problem of mismatching data access speed, achieve strong compatibility and universality, improve accuracy rate, the effect of improving coverage

Pending Publication Date: 2022-07-08
HYGON INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, there is a need for a data prefetching method with high prefetch coverage, high accuracy, and low cache failure rate to improve the mismatch between data processing speed and data access speed, thereby improving the data processing efficiency of the computer

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  • Data prefetching method and device

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Embodiment Construction

[0027] In order to make the objects, technical solutions and advantages of the present disclosure more apparent, exemplary embodiments according to the present disclosure will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, not all of the embodiments of the present disclosure, and it should be understood that the present disclosure is not limited by the example embodiments described herein.

[0028] Further, in this specification and the drawings, steps and elements having substantially the same or similar elements are denoted by the same or similar reference numerals, and repeated descriptions of these steps and elements will be omitted.

[0029]Furthermore, in this specification and the drawings, elements are described in the singular or plural depending on the embodiment. However, the singular and plural forms have been appropriately chosen for the pr...

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Abstract

The embodiment of the invention provides a data prefetching method and device supporting a non-single address interval access mode, a computer program product and a computer readable storage medium. The method provided by the embodiment of the invention comprises the following steps: acquiring an address to be accessed and an access address historical record; according to the access address historical record, determining a pre-fetched address jump number; determining a reference address distance based on the access address historical record and the determined number of pre-fetched address jumps; and on the basis of the determined reference address distance and the address to be accessed, determining a prefetch address to be subjected to data prefetch. According to the data pre-fetching method provided by the embodiment of the invention, the pre-fetching coverage rate is improved, cache missing is reduced, and the pre-fetching accuracy is improved. In addition, the prefetching method is small in storage overhead and operation overhead, and can be completely compatible with prefetching of an existing single address interval access mode.

Description

technical field [0001] The present disclosure relates to the field of human computers and processors, and more particularly, to a data prefetching method, apparatus, computer program product, and computer-readable storage medium. Background technique [0002] With the rapid growth of computing demand and the ever-expanding amount of data, in order to match the data storage and processing capabilities of computers, how to improve the efficiency of data access is one of the key research directions of computers and processors. [0003] The development speed of modern processors is fast, but the development speed of memory is slow. The data processing speed is much faster than the data access speed, and the processor spends a lot of time waiting for the return of memory data. The cache technology makes the faster upper memory become the buffer of the lower memory. If the cache hits, the data in the upper memory can be directly read and written. If the cache misses, it has to wai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/0862
CPCG06F12/0862Y02D10/00
Inventor 潘海洋崔泽汉
Owner HYGON INFORMATION TECH CO LTD