Hardware Design Methodology to Utilize Next-Generation Device That May Not Work Properly
| Project/Area Number |
15H02679
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Computer system
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| Research Institution | Ritsumeikan University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
原 祐子 東京工業大学, 工学院, 准教授 (20640999)
冨山 宏之 立命館大学, 理工学部, 教授 (80362292)
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| Project Period (FY) |
2015-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2019: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2018: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2016: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2015: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | Approximate Computing / Stochastic Computing / 設計理論 / 確率的な回路 / Probabilistic Circuit / 高位合成 / 高信頼設計 / LSI設計 / 信頼性の低い素子 / 確率的な動作をする回路 |
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| Outline of Final Research Achievements |
When we design a circuit with unreliable devices, the circuit may output wrong values for certain input patterns. Even so, when such errors can be ignored, we can still use such circuits. Thus, we studied many aspects of Approximate Computing to find various results concerning how we can tolerate some errors. For example, we found an efficient way to design approximate multipliers that have a good trade-off between an image discrimination rate and hardware costs (area and speed) when we develop hardware CNNs for recognizing handwritten characters. Moreover, we also develop an design method for Stochastic Computing such that we can decrease the hardware cost while we keep the calculation errors low.
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| Academic Significance and Societal Importance of the Research Achievements |
信頼性は低いが超小型・超低消費電力などの特性を持つ次世代の素子が将来的に利用できるようになった時には、それを十分に使いこなす設計技術が必要である。具体的には、ばらつきがある素子を利用するために、誤動作する可能性がある回路をそのエラーを許容しながらどのように利用するかという設計指針が必要となる。そのために、本研究により得られたApproximate ComputingやStochastic Computingの分野における様々な設計指針が有用となると期待できる。
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Report
(6 results)
Research Products
(49 results)
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[Presentation] 配列型近似乗算器の設計と解析2016
Author(s)
山元貴普, 谷口一徹, 冨山宏之, 山下茂, 原祐子
Organizer
回路とシステムワークショップ
Place of Presentation
北九州国際会議場（福岡県・北九州市）
Year and Date
2016-05-13
Related Report
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