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Paper Abstract and Keywords
Presentation 2013-08-02 14:30
Reduction of Runtime Overhead in Automated Parallel Processing System using Valgrind
Takayuki Hoshi, Kanemitsu Ootsu, Takeshi Ohkawa, Takashi Yokota (Utsunomiya Univ.) CPSY2013-23
Abstract (in Japanese) (See Japanese page) 
(in English) In order to efficiently utilize the performance of multicore processors, thread level parallel processing is indispensable. To realize the automatic parallel processing without program source codes, we develop a dynamic binary translation system that can parallelize sequential program binary code to the parallelized one by using the Valgrind framework, that is widely used. Since the Valgrind searches for the translated code of each basic block whenever each basic block of target program binary code is executed, the translation process itself becomes the runtime overhead and might cause the obstacle of performance improvement. Toward this problem, we develop two methods for reducing the number of search processes of translated codes. One method is that a basic block directly jumps to itself without passing through the search process within the Valgrind system core when the target of branch instruction is same as the top of the block. The other method is that multiple basic blocks are translated at a time to allow each block to directly jump to next one. Preliminary evaluation shows that the methods can reduce the number of search processes that are runtime overhead, and 20% of the executed instructions can be reduced.
Keyword (in Japanese) (See Japanese page) 
(in English) thread level parallel processing / dynamic binary translation / automatic parallelization / runtime overhead / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 169, CPSY2013-23, pp. 79-84, Aug. 2013.
Paper # CPSY2013-23 
Date of Issue 2013-07-25 (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 DC CPSY  
Conference Date 2013-08-01 - 2013-08-02 
Place (in Japanese) (See Japanese page) 
Place (in English) Kitakyushu-Kokusai-Kaigijyo 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Parallel, Distributed and Cooperative Processing 
Paper Information
Registration To CPSY 
Conference Code 2013-08-DC-CPSY 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Reduction of Runtime Overhead in Automated Parallel Processing System using Valgrind 
Sub Title (in English)  
Keyword(1) thread level parallel processing  
Keyword(2) dynamic binary translation  
Keyword(3) automatic parallelization  
Keyword(4) runtime overhead  
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1st Author's Name Takayuki Hoshi  
1st Author's Affiliation Utsunomiya University (Utsunomiya Univ.)
2nd Author's Name Kanemitsu Ootsu  
2nd Author's Affiliation Utsunomiya University (Utsunomiya Univ.)
3rd Author's Name Takeshi Ohkawa  
3rd Author's Affiliation Utsunomiya University (Utsunomiya Univ.)
4th Author's Name Takashi Yokota  
4th Author's Affiliation Utsunomiya University (Utsunomiya Univ.)
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Speaker Author-1 
Date Time 2013-08-02 14:30:00 
Presentation Time 30 minutes 
Registration for CPSY 
Paper # CPSY2013-23 
Volume (vol) vol.113 
Number (no) no.169 
Page pp.79-84 
#Pages 6 
Date of Issue 2013-07-25 (CPSY) 

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