南方科技大学知识苑(SUSTech KC): 基于NAS搜索的混合精度时空复用乘法器及其控制方法

Title	基于NAS搜索的混合精度时空复用乘法器及其控制方法
Alternative Title	Hybrid precision space-time multiplexing multiplier based on NAS search and control method of hybrid precision space-time multiplexing multiplier
Author	毛伟; 余浩; 李凯 ; 王宇航; 代柳瑶
First Inventor	毛伟
Original applicant	南方科技大学
First applicant	南方科技大学
Address of First applicant	518055 广东省深圳市南山区西丽学苑大道1088号
Current applicant	南方科技大学
Address of Current applicant	518055 广东省深圳市南山区西丽学苑大道1088号 (广东,深圳,南山区)
First Current Applicant	南方科技大学
Address of First Current Applicant	518055 广东省深圳市南山区西丽学苑大道1088号 (广东,深圳,南山区)
Application Number	CN202010789241.4
Application Date	2020-08-07
Open (Notice) Number	CN111966327A
Date Available	2020-11-20
Status of Patent	实质审查
Legal Date	2020-12-08
Subtype	发明申请
SUSTech Authorship	First
Abstract	本发明实施例公开了一种基于NAS搜索的混合精度时空复用乘法器及其控制方法。该方法包括：对第一乘数和第一被乘数进行拆分以得到一个或多个第二乘数以及一个或多个第二被乘数，第二乘数和第二被乘数的字节量和每个基本计算单元的计算字节量相等；根据第二乘数和第二被乘数生成至少两组输入参数，每组输入参数包括第二乘数和第二被乘数；将至少两组输入参数一一对应输入至少两个基本计算单元，以得到每组输入参数的第一计算结果；根据第一计算结果确认第一乘数和第一被乘数的目标结果。本发明实施例实现了通过时间和空间的混合串并行设计来支持混合精度定点乘累加计算，以深度优化数据流，提高传统乘法器的工作速度并降低需要的面积和能耗。
Other Abstract	The embodiment of the invention discloses a hybrid precision space-time multiplexing multiplier based on NAS search and a control method of the hybrid precision space-time multiplexing multiplier. Themethod comprises the steps of splitting a first multiplier and a first multiplicand to obtain one or more second multipliers and one or more second multiplicand, wherein the byte quantity of the second multipliers and the byte quantity of the second multiplicand are equal to the calculation byte quantity of each basic calculation unit; generating at least two groups of input parameters accordingto the second multiplier and the second multiplicand, wherein each group of input parameters comprises the second multiplier and the second multiplicand; inputting the at least two groups of input parameters into at least two basic calculation units in a one-to-one correspondence manner to obtain a first calculation result of each group of input parameters; and determining a target result of the first multiplier and the first multiplicand according to the first calculation result. According to the embodiment of the invention, the hybrid precision fixed-point multiply-accumulate calculation issupported through the hybrid serial-parallel design of time and space, so that the data stream is deeply optimized. The working speed of a traditional multiplier is improved, and the required area andenergy consumption are reduced.
CPC Classification Number	G06F7/5443
IPC Classification Number	G06F7/544
INPADOC Legal Status	（ENTRY INTO FORCE OF REQUEST FOR SUBSTANTIVE EXAMINATION）[2020-12-08][CN]
INPADOC Patent Family Count	1
Extended Patent Family Count	1
Priority date	2020-08-07
Patent Agent	潘登
Agency	北京品源专利代理有限公司
URL	[Source Record]
Data Source	PatSnap
Document Type	Patent
Identifier	http://kc.sustech.edu.cn/handle/2SGJ60CL/533577
Department	SUSTech Institute of Microelectronics 理学院_地球与空间科学系南方科技大学-香港科技大学深港微电子学院筹建办公室
Recommended Citation GB/T 7714	毛伟,余浩,李凯,等. 基于NAS搜索的混合精度时空复用乘法器及其控制方法.

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