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Paper Abstract and Keywords
Presentation 2021-03-03 11:15
The Design and Development of of Quantized Neural Networks Library for Exact Hardware Emulation
Masato Kiyama, Yasuhiro Nakahara, Motoki Amagasaki, Masahiro Iida (Kumamoto Univ.) VLD2020-70 HWS2020-45
Abstract (in Japanese) (See Japanese page) 
(in English) Quantization is used to speed up execution time and save power when runnning Deep neural networks (DNNs) on edge devices or AI chips.
To investigate the effect of quantization, we need performing inference after quantizing the weights of DNN with 32-bit floating-point numbers by a some bit width,
and then quantizing them back to 32-bit floating-point numbers.
This is because the DNN library can only handle floating-point numbers.
However, the accuracy of the emulation does not provide accurate precision.
We need accurate precision to detect overflow in MAC operations or to verify the operation on AI chips.
We have developed PyParch, a DNN library that executes quantized DNNs (QNNs) with exactly the same behavior as hardware.
In this paper, we describe a new proposal and implementation of PyParch.
As a result of the evaluation, the accuracy of QNNs with arbitrary bit widths can be estimated for large and complex DNNs such as YOLOv5, and the overflow can be detected.
We evaluated the overhead of the emulation time and found that it was 5.6 times slower for QNN and 42 times slower for QNN with overflow detection compared to the normal DNN execution time.
Keyword (in Japanese) (See Japanese page) 
(in English) Deep Learning / Quantization / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 400, VLD2020-70, pp. 18-23, March 2021.
Paper # VLD2020-70 
Date of Issue 2021-02-24 (VLD, HWS) 
ISSN Online edition: ISSN 2432-6380
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reproduction
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF VLD2020-70 HWS2020-45

Conference Information
Committee HWS VLD  
Conference Date 2021-03-03 - 2021-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Design Technology for System-on-Silicon, Hardware Security, etc. 
Paper Information
Registration To VLD 
Conference Code 2021-03-HWS-VLD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) The Design and Development of of Quantized Neural Networks Library for Exact Hardware Emulation 
Sub Title (in English)  
Keyword(1) Deep Learning  
Keyword(2) Quantization  
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1st Author's Name Masato Kiyama  
1st Author's Affiliation Faculty of Advanced Science and Technology, Kumamoto University (Kumamoto Univ.)
2nd Author's Name Yasuhiro Nakahara  
2nd Author's Affiliation Graduate School of Science and Technology, Kumamoto University (Kumamoto Univ.)
3rd Author's Name Motoki Amagasaki  
3rd Author's Affiliation Faculty of Advanced Science and Technology, Kumamoto University (Kumamoto Univ.)
4th Author's Name Masahiro Iida  
4th Author's Affiliation Faculty of Advanced Science and Technology, Kumamoto University (Kumamoto Univ.)
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Speaker Author-1 
Date Time 2021-03-03 11:15:00 
Presentation Time 25 minutes 
Registration for VLD 
Paper # VLD2020-70, HWS2020-45 
Volume (vol) vol.120 
Number (no) no.400(VLD), no.401(HWS) 
Page pp.18-23 
#Pages
Date of Issue 2021-02-24 (VLD, HWS) 


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