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Paper Abstract and Keywords
Presentation 2014-11-14 09:25
Accelerating breadth-first search using Tightly Coupled Accelerator
Takahiro Kaneda, Takuji Mitsuishi, Yuki Katsuta, Takuya Kuhara (Keio Univ.), Toshihiro Hanawa (UTokyo), Hideharu Amano (Keio Univ.), Taisuke Boku (Univ. of Tsukuba) CPSY2014-65
Abstract (in Japanese) (See Japanese page) 
(in English) Recent rapid increase of GPU performance makes GPGPU (General Purpose Computation using on
GPUs) a mainstream of high performance computing. For a large scale target, multi-GPU systems in which a node
with a few GPUs are connected through each host CPU have become popular. However, such systems suffer a large
latency to communicate between GPUs attached to different hosts. In order to cope with this problem, Center
of Computational Sciences, University of Tsukuba has developed a tightly couple accelerators (TCA) architecture
which connects a large number of GPUs directly with dedicated switches PEACH2 (PCI-Express Adaptive Com-
munication Hub 2). PEACH2 connects a host directly with PCI express, and forms a ring network by connecting
neighboring PEACH2 switches directly also with PCI express. In this report, breadth rst search (BFS) algorithm
from Graph500 is implemented on a multi-GPU system connected with PEACH2. The performance is compared to
a case of using In niband network and MPI library commonly used in multi-GPU clusters.
Keyword (in Japanese) (See Japanese page) 
(in English) / / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 302, CPSY2014-65, pp. 63-68, Nov. 2014.
Paper # CPSY2014-65 
Date of Issue 2014-11-06 (CPSY) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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)
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Conference Information
Committee CPSY  
Conference Date 2014-11-13 - 2014-11-14 
Place (in Japanese) (See Japanese page) 
Place (in English) Hiroshima University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Cloud Computing, etc. 
Paper Information
Registration To CPSY 
Conference Code 2014-11-CPSY 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Accelerating breadth-first search using Tightly Coupled Accelerator 
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1st Author's Name Takahiro Kaneda  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Takuji Mitsuishi  
2nd Author's Affiliation Keio University (Keio Univ.)
3rd Author's Name Yuki Katsuta  
3rd Author's Affiliation Keio University (Keio Univ.)
4th Author's Name Takuya Kuhara  
4th Author's Affiliation Keio University (Keio Univ.)
5th Author's Name Toshihiro Hanawa  
5th Author's Affiliation The University of Tokyo (UTokyo)
6th Author's Name Hideharu Amano  
6th Author's Affiliation Keio University (Keio Univ.)
7th Author's Name Taisuke Boku  
7th Author's Affiliation University of Tsukuba (Univ. of Tsukuba)
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Speaker Author-1 
Date Time 2014-11-14 09:25:00 
Presentation Time 25 minutes 
Registration for CPSY 
Paper # CPSY2014-65 
Volume (vol) vol.114 
Number (no) no.302 
Page pp.63-68 
#Pages 6 
Date of Issue 2014-11-06 (CPSY) 

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