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Data transmission device and method

A technology of data transmission device and processing device, which is applied in the field of information processing, and can solve the problems that data transmission technology cannot guarantee atomicity, etc.

Active Publication Date: 2020-06-09
SHANGHAI CAMBRICON INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In a multi-core processor system, the multi-core processor usually executes multi-thread tasks, and the processor core work process is often interrupted by the thread scheduling mechanism. Due to thread switching, the usual data transmission technology cannot guarantee atomicity

Method used

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  • Data transmission device and method
  • Data transmission device and method

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Embodiment Construction

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0052] The terms "first", "second", "third" and "fourth" in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device comprising a series of steps or units is not limited to the listed st...

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Abstract

The invention relates to a data transmission device and method. The system comprises a state cache unit, a system memory, a bus and a direct memory access unit; the state cache unit is connected withthe system memory and is used for storing a state identifier corresponding to a memory access address in the system memory; the system memory is connected with the direct memory access unit through the bus and is used for storing input data; the bus is used for transmitting memory access response information; and the direct memory access unit is used for performing data interaction with the systemmemory according to the state identifier and the memory access response information. By adopting the device and the method, atomic access operation can be realized.

Description

technical field [0001] The present application relates to the technical field of information processing, and in particular to a data transmission device and method. Background technique [0002] With the continuous development of information technology and people's growing needs, people's requirements for information timeliness are getting higher and higher. For batch data processing in high-speed I / O devices and neural network processors, direct memory access (Direct Memory Access, DMA) is usually used to exchange data between external devices and system memory. [0003] In a multi-core processor system, the multi-core processor usually executes multi-thread tasks, and the work of the processor core is often interrupted by the thread scheduling mechanism. Due to thread switching, the usual data transmission technology cannot guarantee atomicity. Contents of the invention [0004] Based on this, it is necessary to address the above technical problems and provide a data tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/28G06N3/063G06N20/00
CPCG06F13/28G06N3/063G06F2213/28
Inventor 不公告发明人
Owner SHANGHAI CAMBRICON INFORMATION TECH CO LTD