Paper Abstract and Keywords |
Presentation |
2015-08-06 13:30
Parallelization of Approximate String Matching Based on Computation of Prefix Sums Yasuaki Mitani, Fumihiko Ino, Kenichi Hagihara (Osaka Univ.) CPSY2015-39 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In this paper, aiming at accelerating string search, we propose a parallel method for a shift-or algorithm. Our method achieves parallelization by interpreting the shift-or algorithm as computation of prefix sums. This interpretation allows the shift-or algorithm to run efficiently on a graphics processing unit (GPU), because prefix-sum computation can be parallelized so that threads in a warp can access contiguous memory region. We firstly define two binary operators to realize this interpretation. We then show a proof on the associativity of these operators needed for parallelization of prefix-sum computation. In experiments, we compared our method with a previous method based on data segmentation. As a result, for exact string matching, our method was 1.5 times faster than the previous method. However, for approximate string matching, our method resulted in 76-104% search throughput compared with the previous method. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
approximate string matching / bit parallel algorithm / prefix sums / shift-or algorithm / GPU / / / |
Reference Info. |
IEICE Tech. Rep., vol. 115, no. 174, CPSY2015-39, pp. 229-234, Aug. 2015. |
Paper # |
CPSY2015-39 |
Date of Issue |
2015-07-28 (CPSY) |
ISSN |
Print edition: ISSN 0913-5685 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) |
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CPSY2015-39 |
Conference Information |
Committee |
CPSY DC IPSJ-ARC |
Conference Date |
2015-08-04 - 2015-08-06 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
B-Con Plaza (Beppu) |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Parallel, Distributed and Cooperative Processing |
Paper Information |
Registration To |
CPSY |
Conference Code |
2015-08-CPSY-DC-ARC |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Parallelization of Approximate String Matching Based on Computation of Prefix Sums |
Sub Title (in English) |
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Keyword(1) |
approximate string matching |
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bit parallel algorithm |
Keyword(3) |
prefix sums |
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shift-or algorithm |
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GPU |
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1st Author's Name |
Yasuaki Mitani |
1st Author's Affiliation |
Osaka University (Osaka Univ.) |
2nd Author's Name |
Fumihiko Ino |
2nd Author's Affiliation |
Osaka University (Osaka Univ.) |
3rd Author's Name |
Kenichi Hagihara |
3rd Author's Affiliation |
Osaka University (Osaka Univ.) |
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Speaker |
Author-1 |
Date Time |
2015-08-06 13:30:00 |
Presentation Time |
30 minutes |
Registration for |
CPSY |
Paper # |
CPSY2015-39 |
Volume (vol) |
vol.115 |
Number (no) |
no.174 |
Page |
pp.229-234 |
#Pages |
6 |
Date of Issue |
2015-07-28 (CPSY) |
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