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Cache synthesis prefetching method and device, processor and electronic equipment

A processor core, cache technology, applied in memory systems, electrical digital data processing, instruments, etc., can solve problems such as performance loss

Pending Publication Date: 2022-04-05
HYGON INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although all levels of cache are used to save the data recently accessed by the processor core, when reading data that has never been accessed or data that has been kicked out due to the cache size limit, the processor core still needs to wait for dozens or even hours. Hundreds of clock cycles, resulting in performance loss

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  • Cache synthesis prefetching method and device, processor and electronic equipment
  • Cache synthesis prefetching method and device, processor and electronic equipment
  • Cache synthesis prefetching method and device, processor and electronic equipment

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Embodiment Construction

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some of the embodiments of the present disclosure, not all of them. Based on the described embodiments of the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative effort fall within the protection scope of the present disclosure.

[0037] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the usual meanings understood by those skilled in the art to which the present disclosure belongs. "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importan...

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Abstract

The invention discloses a cache synthesis prefetching method and device, a processor and electronic equipment, the cache synthesis prefetching method is used for prefetching a first cache and a second cache, and the first cache is closer to a processor core than the second cache. The method comprises the following steps: acquiring utilization rate information of a prefetched information source; according to the utilization rate information of the prefetching information source, prefetching modes of the first cache and the second cache are determined, and the prefetching modes of the first cache and the second cache are different. According to the cache synthesis prefetching method, the cache pollution of the target cache (such as the first cache and the second cache) can be effectively reduced, and the overall performance of the CPU is improved.

Description

technical field [0001] Embodiments of the present disclosure relate to a cache composition prefetching method, device, processor and electronic equipment. Background technique [0002] In the existing CPU (Central Processing Unit) architecture, program instructions and data can be stored in a DRAM (Dynamic Random Access Memory, Dynamic Random Access Memory) memory. The operating frequency of the CPU core (also known as the processor core) is much higher than the operating frequency of the DRAM memory. Therefore, it takes hundreds of clock cycles for the processor core to obtain instructions and data from the memory, which often causes the processor core to fail to continue running. related instructions and idling, resulting in performance loss. Therefore, modern high-performance CPU architectures include a multi-level cache architecture (Cache Hierarchy) to save recently accessed data. Although all levels of cache are used to save the data recently accessed by the processo...

Claims

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Application Information

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IPC IPC(8): G06F12/0862
Inventor 胡世文
Owner HYGON INFORMATION TECH CO LTD