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Paper Abstract and Keywords
Presentation 2013-08-02 17:30
Code Optimization for Path Based Speculative Multi-threading
Yuki Homma, Hiroyoshi Jutori, Kanemitsu Ootsu, Takeshi Ohkawa, Takashi Yokota (Utsunomiya Univ.) CPSY2013-28
Abstract (in Japanese) (See Japanese page) 
(in English) Our Two-Path Limited Speculation system PALS speculatively executes one of the top two paths of high frequency in loops.
When the size of thread is small on PALS, the overhead of thread control becomes relatively large, and performance degradation is caused by thread control overhead.
We developed a loop unrolling method for the problem.
However, the dependence distance between dependent variables between threads becomes longer by applying loop unrolling, and the waiting time for receiving the dependent data becomes long.
In this paper, we study a scheduling method that makes waiting times to be short.
We show that the scheduling can achieve up to 3.28 times speed-up by the scheduling method.
Keyword (in Japanese) (See Japanese page) 
(in English) path based speculative multi-threading / program execution path / optimization / code scheduling / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 169, CPSY2013-28, pp. 109-114, Aug. 2013.
Paper # CPSY2013-28 
Date of Issue 2013-07-25 (CPSY) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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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) Code Optimization for Path Based Speculative Multi-threading 
Sub Title (in English)  
Keyword(1) path based speculative multi-threading  
Keyword(2) program execution path  
Keyword(3) optimization  
Keyword(4) code scheduling  
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1st Author's Name Yuki Homma  
1st Author's Affiliation Utsunomiya University (Utsunomiya Univ.)
2nd Author's Name Hiroyoshi Jutori  
2nd Author's Affiliation Utsunomiya University (Utsunomiya Univ.)
3rd Author's Name Kanemitsu Ootsu  
3rd Author's Affiliation Utsunomiya University (Utsunomiya Univ.)
4th Author's Name Takeshi Ohkawa  
4th Author's Affiliation Utsunomiya University (Utsunomiya Univ.)
5th Author's Name Takashi Yokota  
5th Author's Affiliation Utsunomiya University (Utsunomiya Univ.)
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Speaker Author-1 
Date Time 2013-08-02 17:30:00 
Presentation Time 30 minutes 
Registration for CPSY 
Paper # CPSY2013-28 
Volume (vol) vol.113 
Number (no) no.169 
Page pp.109-114 
#Pages
Date of Issue 2013-07-25 (CPSY) 


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