Photoelectric hybrid multiply-accumulate calculation structure
A technology of photoelectric hybrid and computing structure, applied in computing, electrical digital data processing, counting mechanisms/items, etc., can solve problems such as low computing accuracy, poor stability, and low conversion efficiency, and achieve fast transmission speed, improved performance, and reduced The effect of power consumption
Active Publication Date: 2021-08-06
SHANGHAI JIAO TONG UNIV
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, existing optical calculations rely on the analog domain, and are limited by device insertion loss, finite extinction ratio, noise and nonlinear factors, etc., and there are problems of low calculation accuracy and poor stability.
At the same time, it faces multiple electrical-optical and optical-electrical signal conversions in the calculation process, which has the problems of low conversion efficiency and high energy consumption.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027] The specific implementation manner of the present invention will be described in more detail below with reference to schematic diagrams. The advantages and features of the present invention will be more apparent from the following description. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.
[0028] Hereinafter, the terms "first", "second", etc. are used to distinguish between similar elements, and are not necessarily used to describe a specific order or chronological order. It is to be understood that these terms so used are interchangeable under appropriate circumstances. Similarly, if a method described herein includes a series of steps, the order in which these steps are presented is not necessarily the only order in which these steps can be performed, and some described steps may be omitted and / or...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a photoelectric hybrid multiply-accumulate calculation structure, which comprises a point multiplication operation unit and anaccumulation calculation unit, wherein the point multiplication operation unit isused for carrying out point multiplication calculation on each pair of numerical values in a plurality of pairs of input numerical values and obtaining a plurality of point multiplication results, and the point multiplication operation unit is completed by a circuit; and the accumulation calculation unit is used for accumulating the plurality of point multiplication results, and the accumulation calculation unit is completed by a photoelectric hybrid device in a time domain. The structure combines the characteristics that an electrical device is easy to realize point multiplication logic operation, high in optical signal propagation speed and short in time delay, and can realize time domain multiply-accumulate operation with high operation speed. Meanwhile, accumulation operation is achieved on an optical path, the low-efficiency problem that in the current optical calculation technology, electricity-light-electricity conversion needs to be conducted for multiple times, and accumulation operation needs to be completed at a circuit end is solved, that is, the photoelectric hybrid integration technology is used, point multiplication calculation and accumulation calculation are conducted on input numerical values, performance is improved, and power consumption is reduced.
Description
technical field [0001] The invention relates to the field of optoelectronic technology, in particular to an optoelectronic hybrid multiply-accumulate calculation structure. Background technique [0002] Convolutional neural network (CNN), as an artificial neural network algorithm, is widely used in maximum likelihood estimation applications such as image processing and speech recognition. CNNs require intensive computation and memory resources during inference, accompanied by large energy consumption. This makes it challenging to run CNNs in energy-constrained edge devices such as self-driving cars, image recognition, and other IoT devices. The main operation in CNN is the multiply-accumulate (MAC) operation, which is calculated by performing the sum of the dot products of the weight matrix and the eigenvalue matrix. Therefore, improving the energy efficiency and speed of multiply-accumulate operations is particularly important to reduce the power consumption of CNN and sp...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G06F7/544G06M1/272
CPCG06F7/5443G06M1/272
Inventor 何卫锋纪鹏飞裴秉玺林文淼毛志刚
Owner SHANGHAI JIAO TONG UNIV