Paper Abstract and Keywords |
Presentation |
2021-03-26 14:20
IPC control mechanism for highly efficient RT-DVFS Atsushi Santo, Nobuyuki Yamasaki (Keio Univ.) CPSY2020-65 DC2020-95 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Embedded real-time systems requires power consumption while satisfying real-time performance. RT-DVFS and real-time scheduling methods are applied respectively to guarantee performance. Responsive Multithreaded Processor (RMTP) is a Simultaneous Multithreading (SMT) processor for embedded real-time systems. It implements an IPC control mechanism that controls the execution speed of threads. By using the IPC control mechanism, Fluid schedule, which is an optimal scheduling algorithm, can be achieved with a very small overhead. By combining Fluid Schedule with the IPC control mechanism and RT-DVFS, it is possible to reduce power consumption while guaranteeing real-time performance. However, IPC control mechanism cannot extract Thread Level Parallelism (TLP) insufficiently, and resource utilization becomes poor. In this study, we propose a method for effectively extracting TLP to improve resource utilization during IPC control. It enables to operate the system at a lower frequency during RT-DVFS. As a result of evaluation by simulation, it was confirmed that the proposed method improves resource utilization and enables efficient reduction of power consumption. |
Keyword |
(in Japanese) |
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Reference Info. |
IEICE Tech. Rep., vol. 120, no. 435, CPSY2020-65, pp. 91-96, March 2021. |
Paper # |
CPSY2020-65 |
Date of Issue |
2021-03-18 (CPSY, DC) |
ISSN |
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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CPSY2020-65 DC2020-95 |
Conference Information |
Committee |
CPSY DC IPSJ-SLDM IPSJ-EMB IPSJ-ARC |
Conference Date |
2021-03-25 - 2021-03-26 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Online |
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(See Japanese page) |
Topics (in English) |
ETNET2021 |
Paper Information |
Registration To |
CPSY |
Conference Code |
2021-03-CPSY-DC-SLDM-EMB-ARC |
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Japanese |
Title (in Japanese) |
(See Japanese page) |
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(See Japanese page) |
Title (in English) |
IPC control mechanism for highly efficient RT-DVFS |
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1st Author's Name |
Atsushi Santo |
1st Author's Affiliation |
Keio University (Keio Univ.) |
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Nobuyuki Yamasaki |
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Keio University (Keio Univ.) |
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Speaker |
Author-1 |
Date Time |
2021-03-26 14:20:00 |
Presentation Time |
20 minutes |
Registration for |
CPSY |
Paper # |
CPSY2020-65, DC2020-95 |
Volume (vol) |
vol.120 |
Number (no) |
no.435(CPSY), no.436(DC) |
Page |
pp.91-96 |
#Pages |
6 |
Date of Issue |
2021-03-18 (CPSY, DC) |
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