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| Presentation | 2007-11-20 16:00 Track Swapping on Critical Paths Utilizing Random Variations for FPGAs to Enhance Speed and Yield Yuuri Sugihara, Youhei Kume, Kazutoshi Kobayashi, Hidetoshi Onodera (Kyoto Univ.)  RECONF2007-34 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | FPGAs in future deep submicron fabrication process will suffer from drastic speed and yield loss caused by device variations. We propose variation-aware reconfiguration which utilizes these variations for performance enhancement. We have fabricated and measured 90nm FPGAs, in which random variations without spatial correlations are dominant. To utilize these random variations for performance enhancement, optimizing each device from a common configuration is better than producing optimized configurations according to detailed measurement results. In this paper we apply the track swapping procedure to critical path reconfiguration which obtains an optimized configuration to repeat measurement and reconfiguration. First we configure all fabricated FPGAs with a common configuration data. The configuration of each die is optimized to reroute the critical paths that does not meet timing specifications. Rerouting of a critical path usually causes drastic topology changes which may prolong other paths and will create new critical paths. In the track swapping procedure, we swap a wire track on a critical path for the adjacent track without any topology change. It can be realized to use switch blocks with more flexibility. We experiment performance enhancement by applying the track swapping to LGSynth93 benchmark circuits. We achieve 5.81% of speed enhancement and 26.62% of yield enhancement. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Variation / FPGA / Reconfigure / Yield / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 107, no. 340, RECONF2007-34, pp. 13-18, Nov. 2007. | |
| Paper # | RECONF2007-34 | |
| Date of Issue | 2007-11-13 (RECONF) | |
| 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) | |
| Download PDF | RECONF2007-34 |
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| Conference Information | |
| Committee | VLD CPSY RECONF DC IPSJ-SLDM IPSJ-ARC |
| Conference Date | 2007-11-20 - 2007-11-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kitakyushu International Conference Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Design Gaia 2007 ---A New Frontier in VLSI Design--- |
| Paper Information | |
| Registration To | RECONF |
| Conference Code | 2007-11-VLD-CPSY-RECONF-DC-IPSJ-SLDM-IPSJ-ARC |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Track Swapping on Critical Paths Utilizing Random Variations for FPGAs to Enhance Speed and Yield |
| Sub Title (in English) | |
| Keyword(1) | Variation |
| Keyword(2) | FPGA |
| Keyword(3) | Reconfigure |
| Keyword(4) | Yield |
| Keyword(5) | |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Yuuri Sugihara |
| 1st Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 2nd Author's Name | Youhei Kume |
| 2nd Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 3rd Author's Name | Kazutoshi Kobayashi |
| 3rd Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 4th Author's Name | Hidetoshi Onodera |
| 4th Author's Affiliation | Kyoto University (Kyoto Univ.) |
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| Speaker | Author-1 |
| Date Time | 2007-11-20 16:00:00 |
| Presentation Time | 25 minutes |
| Registration for | RECONF |
| Paper # | RECONF2007-34 |
| Volume (vol) | vol.107 |
| Number (no) | no.340 |
| Page | pp.13-18 |
| #Pages | 6 |
| Date of Issue | 2007-11-13 (RECONF) |
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