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A data transmission method, device and system

A technology of a data transmission device and a data transmission method, which is applied in the computer field and can solve problems such as occupying memory bus bandwidth and affecting the efficiency of memory bus bandwidth usage

Active Publication Date: 2018-07-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since each CPU access to the memory controller will be carried out through the memory bus, and the above-mentioned solution needs to transfer the data in the SCM through the RAM, it needs multiple accesses from the memory controller and occupies the bandwidth of the memory bus. Greatly affects the efficiency of memory bus bandwidth usage

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  • A data transmission method, device and system
  • A data transmission method, device and system
  • A data transmission method, device and system

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Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0037]The solution provided by the embodiment of the present invention is applied to data transmission between hosts, refer to figure 2 As shown, the embodiment of the present invention provides the host framework that the embodiment of the present invention applies, and this host A and B comprise CPU, RAM, SCM, NIC (Chinese full name: network adapter / network card, English full name: Network Interface Card) , DISK wherein the above-mentioned devices are connected ...

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Abstract

The embodiment of the invention provides a data transmission method, device and system, relates to the field of computers, can lower memory bus bandwidth occupied by data transmission and improves the use efficiency of the memory bus bandwidth. The method comprises the following steps: the data transmission device receives data sent from other hosts; the data transmission device writes the data into a SCM (Storage Class Memory) through a memory controller according to the address of the SCM; and after the data transmission device receives data writing finishing response fed back from the SCM, the data transmission device sends a data processing instruction to a CPU (Central Processing Unit), and the CPU is used for indicating the memory controller to write data in a cache into the SCM according to the data processing instruction. The method is used for data transmission.

Description

technical field [0001] Embodiments of the present invention relate to the computer field, and in particular, to a data transmission method, device and system. Background technique [0002] The future computer (host A, B) system architecture develops as follows figure 1 shown. Among them, the architecture mainly includes CPU (full name in Chinese: central processing unit, full name in English: Central Processing Unit), RAM (full name in Chinese: random access memory) that provides buffer (Chinese: cache) and cache (Chinese: fast buffer storage) space , English full name: Random-Access Memory), SCM (Chinese full name: Storage Class Memory, English full name: Storage Class Memory), DISK (Chinese: Disk) and TAPE (Chinese: Volume). Among them, SCM can provide memory-level access capabilities and ensure that data will not be lost after power failure; from the perspective of data classification, it will gradually replace flash solid-state drives (English abbreviation: FLASH SSD, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/16
CPCG06F13/1678
Inventor 罗庆超
Owner HUAWEI TECH CO LTD