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Paper Abstract and Keywords
Presentation 2013-04-11 16:45
Spin-Transfer Torque RAM Cache Energy Reduction Using Zero-Data Flags
Yuta Kimi, Jinwook Jung, Yohei Nakata, Masahiko Yoshimoto, Hiroshi Kawaguchi (Kobe Univ.) ICD2013-10 Link to ES Tech. Rep. Archives: ICD2013-10
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we propose an energy reduction scheme for Spin-Transfer Torque RAM (STT-RAM) Caches. Introducing STT-RAM to large on-chip caches has been attracting attention because of its non-volatility. However, large energy requirement of STT-RAM on write operations, resulting in a huge amount of dynamic energy consumption, makes it difficult to leverage STT-RAM to on-chip cache designs. In order to reduce the energy consumption of the STT-RAM cache during write operations, the proposed design appends additional flags in cache tag arrays and sets these additional bits if the corresponding data in the cache line are zero. Our experimental results show that the proposed cache design can reduce 36.18% of total energy consumption in the STT-RAM cache at the byte-granular implementation, and 42.15% at the word granularity.
Keyword (in Japanese) (See Japanese page) 
(in English) Cache / STT-RAM / Energy Reduction / Zero-Data / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 1, ICD2013-10, pp. 47-52, April 2013.
Paper # ICD2013-10 
Date of Issue 2013-04-04 (ICD) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 ICD2013-10 Link to ES Tech. Rep. Archives: ICD2013-10

Conference Information
Committee ICD  
Conference Date 2013-04-11 - 2013-04-12 
Place (in Japanese) (See Japanese page) 
Place (in English) Advanced Industrial Science and Technology (AIST) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Memory Device Technologies 
Paper Information
Registration To ICD 
Conference Code 2013-04-ICD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Spin-Transfer Torque RAM Cache Energy Reduction Using Zero-Data Flags 
Sub Title (in English)  
Keyword(1) Cache  
Keyword(2) STT-RAM  
Keyword(3) Energy Reduction  
Keyword(4) Zero-Data  
1st Author's Name Yuta Kimi  
1st Author's Affiliation Kobe University (Kobe Univ.)
2nd Author's Name Jinwook Jung  
2nd Author's Affiliation Kobe University (Kobe Univ.)
3rd Author's Name Yohei Nakata  
3rd Author's Affiliation Kobe University (Kobe Univ.)
4th Author's Name Masahiko Yoshimoto  
4th Author's Affiliation Kobe University (Kobe Univ.)
5th Author's Name Hiroshi Kawaguchi  
5th Author's Affiliation Kobe University (Kobe Univ.)
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Date Time 2013-04-11 16:45:00 
Presentation Time 25 
Registration for ICD 
Paper # IEICE-ICD2013-10 
Volume (vol) IEICE-113 
Number (no) no.1 
Page pp.47-52 
#Pages IEICE-6 
Date of Issue IEICE-ICD-2013-04-04 

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