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Memory access method and device

A memory access and memory technology, applied in the computer field, can solve the problems of high power consumption and achieve the effects of improving performance, reducing page conflicts, and reducing memory power consumption

Active Publication Date: 2012-09-19
LOONGSON TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a method and device for memory access to solve the problem caused by the failure of all memory particles on the same Rank to perform page opening and page closing operations when a page conflict occurs in the process of memory access in the related art. Big problem

Method used

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Embodiment 1

[0034] The present invention provides a memory access method, specifically, as image 3 As shown, the method includes:

[0035] S302, receiving an access request, the access request is a request for accessing memory; preferably, when a certain row of data needs to be accessed (such as reading a certain row of data or writing data), send a request to the memory controller to access the memory ask.

[0036] S304. Access the memory according to the access request in units of granule groups, where the granule groups are obtained by grouping memory granules, and each granule group includes one or more memory granules. Preferably, the memory granules are divided into several granule groups, and each granule group includes one or more memory granules. Specifically, Figure 4 A schematic diagram showing a memory group obtained by grouping memory particles, in Figure 4Among them, a Rank is composed of 4 memory granules, and the corresponding numbers are memory granule 0, memory gr...

Embodiment 2

[0058] Based on the memory access method described in Embodiment 1 above, the present invention also provides a memory access device, specifically, as Figure 9 As shown, the device includes: a receiving unit 902, configured to receive an access request, the access request is a request to access memory; preferably, when a row of data needs to be accessed (for example, to read a row of data or write data) , to send an access request to the memory controller to request access to the memory. The access unit 904 is configured to access the memory in units of granule groups according to the access request, wherein the granule groups are obtained by grouping memory granules, and each granule group contains one or more memory granules. Specifically, Figure 4 A schematic diagram showing a memory group obtained by grouping memory particles, in Figure 4 Among them, a Rank is composed of 4 memory granules, and the corresponding numbers are memory granule 0, memory granule 1, memory g...

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Abstract

The invention discloses a memory access method and device. The method comprises the following steps: receiving an access request which is a request for accessing a memory; and according to the access request, accessing the memory by taking a grain group as a unit, wherein the grain group is obtained by grouping memory grains, and each grain group comprises one or a plurality of memory grains. According to the memory access method and device, the problem in the relevant technique that high power consumption is caused because all memory grains at the same Rank need to open and close a page when page conflict happens in the memory accessing process is solved, the effect of reducing memory power consumption is achieved, and furthermore, the performance of a memory system is improved.

Description

technical field [0001] The invention relates to the field of computers, in particular to a memory access method and device. Background technique [0002] In existing computer systems, the performance of the memory system plays a decisive role in the performance of the processor. The memory system is mainly composed of a memory controller and memory chips. The interface between the memory controller and the memory chip is mainly composed of a control bus and a data bus. The control bus mainly includes control commands and address information. In order to obtain a higher memory access bandwidth (bandwidth refers to the amount of data provided by the memory system to the processor per unit time, usually in bytes), the data bus between the memory controller and the memory chip is generally relatively wide. Usually 64 bits. [0003] Existing memory granules usually adopt the organizational form of Rank, each memory controller can be connected to multiple Ranks, and each Rank ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/06
CPCY02B60/1225Y02D10/00
Inventor 张广飞王焕东陈新科黄帅
Owner LOONGSON TECH CORP
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