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Paper Abstract and Keywords
Presentation 2021-01-28 17:15
A Hardware Implementation of Neural Networks using HDLRuby, a Ruby-based Hardware Description Language
Ryota Sakai, Yuki Maehara, Lovic Gauthier (NITAC) CAS2020-53 ICTSSL2020-38
Abstract (in Japanese) (See Japanese page) 
(in English) In the recent years, FPGAs have been attracting attention as neural network accelerators for their superior performance in terms of latency and power consumption compared to CPU-and GPU-based implementations. In this study we used HDLRuby, a hardware description language including SW paradigms not available in equivalent languages. They make this language very flexible, and we took advantage of these features to freely set the number of layers and for each layer, their activation function, their number of neurons. We implemented the moduleusing the above method, simulatedit using the HDLRuby code and the Verilog HDL code. The Verilog HDLcode provesto be several times longer than the original code.
Keyword (in Japanese) (See Japanese page) 
(in English) FPGA / HDLRuby / Ruby / Neural Networks / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 346, CAS2020-53, pp. 79-84, Jan. 2021.
Paper # CAS2020-53 
Date of Issue 2021-01-21 (CAS, ICTSSL) 
ISSN Online edition: ISSN 2432-6380
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 CAS2020-53 ICTSSL2020-38

Conference Information
Committee CAS ICTSSL  
Conference Date 2021-01-28 - 2021-01-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Students session, General session 
Paper Information
Registration To CAS 
Conference Code 2021-01-CAS-ICTSSL 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Hardware Implementation of Neural Networks using HDLRuby, a Ruby-based Hardware Description Language 
Sub Title (in English)  
Keyword(1) FPGA  
Keyword(2) HDLRuby  
Keyword(3) Ruby  
Keyword(4) Neural Networks  
1st Author's Name Ryota Sakai  
1st Author's Affiliation National Institute of Technology, Ariake College (NITAC)
2nd Author's Name Yuki Maehara  
2nd Author's Affiliation National Institute of Technology, Ariake College (NITAC)
3rd Author's Name Lovic Gauthier  
3rd Author's Affiliation National Institute of Technology, Ariake College (NITAC)
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Speaker Author-1 
Date Time 2021-01-28 17:15:00 
Presentation Time 20 minutes 
Registration for CAS 
Paper # CAS2020-53, ICTSSL2020-38 
Volume (vol) vol.120 
Number (no) no.346(CAS), no.347(ICTSSL) 
Page pp.79-84 
Date of Issue 2021-01-21 (CAS, ICTSSL) 

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