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Paper Abstract and Keywords
Presentation 2023-07-20 15:15
Instruction Scheduling for GPUs Utilizing Subwarp Interleaving
Junji Fukuhara, Munehiro Takimoto (TUS) SS2023-4 KBSE2023-15
Abstract (in Japanese) (See Japanese page) 
(in English) Graphics Processing Units (GPUs) exploit the Single-Instruction Multiple-Thread (SIMT) execution model, which causes branch divergence when SIMT threads in a warp follow different execution paths. Once the divergence occurs, the execution of diverged paths is serialized, decreasing the performance of GPU programs. Subwarp Interleaving (SI), which allows GPUs to interleave the execution of some subwarps when one subwarp is stalled, has been proposed. Although SI can hide load-to-use stalls in divergent paths, the effectiveness is limited by the order of instructions in divergent branches. In this paper, we propose the novel instruction scheduling algorithm for GPUs to allow SI to hide load-to-use stalls more efficiently and improve performance. Our experimental results show that the effect on sample programs and the future expandability of the proposed method.
Keyword (in Japanese) (See Japanese page) 
(in English) GPU / instruction scheduling / compiler optimization / / / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 123, SS2023-4, pp. 19-24, July 2023.
Paper # SS2023-4 
Date of Issue 2023-07-13 (SS, KBSE) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
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 SS2023-4 KBSE2023-15

Conference Information
Committee SS KBSE IPSJ-SE  
Conference Date 2023-07-20 - 2023-07-22 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To SS 
Conference Code 2023-07-SS-KBSE-SE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Instruction Scheduling for GPUs Utilizing Subwarp Interleaving 
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Keyword(1) GPU  
Keyword(2) instruction scheduling  
Keyword(3) compiler optimization  
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1st Author's Name Junji Fukuhara  
1st Author's Affiliation Tokyo University of Science (TUS)
2nd Author's Name Munehiro Takimoto  
2nd Author's Affiliation Tokyo University of Science (TUS)
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Speaker Author-1 
Date Time 2023-07-20 15:15:00 
Presentation Time 25 minutes 
Registration for SS 
Paper # SS2023-4, KBSE2023-15 
Volume (vol) vol.123 
Number (no) no.123(SS), no.124(KBSE) 
Page pp.19-24 
#Pages 6 
Date of Issue 2023-07-13 (SS, KBSE) 

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