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Fault tolerance on-chip: a reliable computing paradigm using self-test, self-diagnosis, and self-repair (3S) approach

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Science China(Information Sciences) 2018年第11期61卷 31-47页

作者： Xiaowei LI Guihai YAN Jing YE Ying WANG State Key Laboratory of Computer Architecture Institute of Computing TechnologyChinese Academy of Sciences University of Chinese Academy of Sciences

If your computer crashes, you can revive it by a reboot, an empirical solution that usually turns out to be effective. The rationale behind this solution is that transient faults, either in hardware or software,can be fixed by refreshing the machine state. Such a "silver bullet", however, could be futile in the future because the faults, especially those existing in the hardware such as Integrated Circuit(IC) chips, cannot be eliminated by refreshing. What we need is a more sophisticated mechanism to steer the system back to the right track. The "magic cure" is the Fault Tolerance On-Chip(FTOC) mechanism, which relies on a suite of built-in design-for-reliability logic, including fault detection, fault diagnosis, and error recovery, working in a self-supportive manner. We have exploited the FTOC to build a holistic solution ranging from on-chip fault detection to error recovery mechanisms to address faults caused by chips progressively aging. Besides fault detection, the FTOC paradigm provides attractive benefits, such as facilitating graceful performance degradation, mitigating the impact of verification blind spots, and improving the chip yield.

关键词： fault tolerance on-chip self-test self-diagnosis self-repair

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High Performance Computing for CS-InSAR Data Processing

High Performance Computing for CS-InSAR Data Processing

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2021 SAR in Big Data Era, BIGSARDATA 2021

作者： Zhang, Weikang You, Haihang Tang, Yixian Wang, Chao Zhang, Hong Chinese Academy of Sciences State Key Laboratory of Computer Architecture Institute of Computing Technology Beijing China Chinese Academy of Sciences Key Laboratory of Digital Earth Science Aerospace Information Research Institute Beijing China

ISBN: (纸本)9781665401234

In this paper, we have developed a highperformance data processing system for big SAR data based on parallel and distributed computation using supercomputer. Aiming at the pipeline of InSAR, we mainly focus on the parallelization and optimization of computing hotspot to accelerate the operation. Furthermore, we take advantage of the technology of distributed computation and multitask automation to get higher performance - process more data in less time. With the high-performance system, we obtained the nationwide measurement of China's surface movement from September 2018 to February 2020 and from January to December in 2020 using 20-30 computing nodes, processing nearly 1PB of data in total. The calculation time of the two images of national scale surface movement is completed in only 7 and 5 days, respectively. © 2021 IEEE.

关键词： Supercomputers

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Spectral period doubling and encoding of dissipative optical solitons via gain control

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PhotoniX 2024年第1期5卷 290-305页

作者： Kangwen Yang Yi Zhou Yuqing Ling Kevin K.Tsia Heping Zeng Kenneth K.Y.Wong Shanghai Key Laboratory of Modern Optical System and Engineering Research Center of Optical Instrument and SystemMinistry of EducationSchool of Optical Electrical and Computer EngineeringUniversity of Shanghai for Science and TechnologyShanghai 200093China Department of Electrical and Electronic Engineering The University of Hong KongHong KongChina Advanced Biomedical Instrumentation Centre Hong Kong Science ParkHong KongChina State Key Laboratory of Precision Spectroscopy East China Normal UniversityShanghai 200062China

Period-doubling bifurcation,as an intermediate state between order and chaos,is ubiquitous in all disciplines of nonlinear ***,previous experimental observations of period doubling in ultrafast fiber lasers are mainly restricted to self-sustained steady state,controllable manipulation and dynamic switching between period doubling and other intriguing dynamical states are still largely ***,we propose to expand the vision of dissipative soliton periodic doubling,which we illustrate experimentally by reporting original spontaneous,collisional,and controllable spectral period doubling in a polarization-maintaining ultrafast fiber ***,the spontaneous period doubling can be observed in both single-and *** mechanism of the switchable state and periodic doubling was revealed by numerical ***,state transformation of individual solitons can be resolved during the collision of triple solitons involving stationary,oscillating,and period ***,controllable deterministic switching between period doubling and other dynamical states,as well as exemplifying the application of period-doubling-based digital encoding,is achieved under programmable pump *** results open a new window for unveiling complex Hopf bifurcation in dissipative systems and bring useful insights into nonlinear science and applications.

关键词： Period doubling Mode locking Ultrafast fiber lasers

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Parallelized Jaccard-Based Learning Method and MapReduce Implementation for Mobile Devices Recognition from Massive Network Data

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China Communications 2013年第7期10卷 71-84页

作者：刘军李银周 Felix Cuadrado Steve Uhlig 雷振明 Beijing Key Laboratory of Network System Architecture and Convergence Beijing University of Posts and Telecommunications Department of Electronic Engineering and Computer Science Queen MaryUniversity of London

The ability of accurate and scalable mobile device recognition is critically important for mobile network operators and ISPs to understand their customers' behaviours and enhance their user *** this paper,we propose a novel method for mobile device model recognition by using statistical information derived from large amounts of mobile network traffic ***,we create a Jaccardbased coefficient measure method to identify a proper keyword representing each mobile device model from massive unstructured textual HTTP access *** handle the large amount of traffic data generated from large mobile networks,this method is designed as a set of parallel algorithms,and is implemented through the MapReduce framework which is a distributed parallel programming model with proven low-cost and high-efficiency *** using real data sets show that our method can accurately recognise mobile client models while meeting the scalability and producer-independency requirements of large mobile network *** show that a 91.5% accuracy rate is achieved for recognising mobile client models from 2 billion records,which is dramatically higher than existing solutions.

关键词： mobile device recognition data mining Jaccard coefficient measurement distributed computing MapReduce

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piRT-IFC:Physics-informed real-time impedance flow cytometry for the characterization of cellular intrinsic electrical properties

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Microsystems & Nanoengineering 2023年第3期9卷 347-356页

作者： Xiaofeng Luan Pengbin Liu Di Huang Haiping Zhao Yuang Li Sheng Sun Wenchang Zhang Lingqian Zhang Mingxiao Li Tian Zhi Yang Zhao Chengjun Huang Institute of Microelectronics of the Chinese Academy of Sciences BeijingChina University of Chinese Academy of Sciences BeijingChina State Key Laboratory of Computer Architecture Institute of Computing TechnologyChinese Academy of SciencesBeijingChina Cerebrovascular Diseases Research Institute Xuanwu Hospital of Capital Medical UniversityBeijingChina

Real-time transformation was important for the practical implementation of impedance flow *** major obstacle was the time-consuming step of translating raw data to cellular intrinsic electrical properties(e.g.,specific membrane capacitance C_(sm) and cytoplasm conductivityσ_(cyto)).Although optimization strategies such as neural network-aided strategies were recently reported to provide an impressive boost to the translation process,simultaneously achieving high speed,accuracy,and generalization capability is still *** this end,we proposed a fast parallel physical fitting solver that could characterize single cells’C_(sm)andσ_(cyto)within 0.62 ms/cell without any data preacquisition or pretraining *** achieved the 27000-fold acceleration without loss of accuracy compared with the traditional *** on the solver,we implemented physics-informed real-time impedance flow cytometry(piRT-IFC),which was able to characterize up to 100,902 cells’C_(sm) andσ_(cyto)within 50 min in a real-time *** to the fully connected neural network(FCNN)predictor,the proposed real-time solver showed comparable processing speed but higher ***,we used a neutrophil degranulation cell model to represent tasks to test unfamiliar samples without data for *** being treated with cytochalasin B and N-Formyl-Met-Leu-Phe,HL-60 cells underwent dynamic degranulation processes,and we characterized cell’s C_(sm)andσ_(cyto)using *** to the results from our solver,accuracy loss was observed in the results predicted by the FCNN,revealing the advantages of high speed,accuracy,and generalizability of the proposed piRT-IFC.

关键词： impedance intrinsic flow

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Advanced computer architecture 1

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丛书名： Communications in computer and Information Science

1000年

作者： Junjie Wu Lian Li

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Multi-threshold second-order phase transition in laser

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Chinese Science Bulletin 2011年第35期56卷 3812-3816页

作者： ZHUANG Wei YU DeShui LIU ZhiWen CHEN JingBiao Institute of Quantum Electronics and State Key Laboratory of Advanced Optical Communication System ＆ Network School of Electronics Engineering ＆ Computer Science Peking University Beijing 100871 China Department of Electrical Engineering The Pennsylvania State University University Park PA 16802 USA

We present a theory of the multi-threshold second-order phase transition,and experimentally demonstrate the multi-threshold secondorder phase transition *** carefully selected parameters,in an external cavity diode laser system,we observe secondorder phase transition with multiple(three or four) thresholds in the measured power-current-temperature three dimensional phase *** controlled death and revival of second-order phase transition sheds new insight into the nature of ubiquitous secondorder phase *** theory and experiment show that the single threshold second-order phase transition is only a special case of the more general multi-threshold second-order phase transition,which is an even richer phenomenon.

关键词：二阶相变多阈值激光相变激光器系统二极管实验外腔

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A semi-active dynamic vibration absorber based on magneto-rheological elastomer for ship equipment: Experiment and analysis 25

A semi-active dynamic vibration absorber based on magneto-rh...

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25th International Congress on Sound and Vibration 2018: Hiroshima Calling, ICSV 2018

作者： Yang, Zhirong Dai, Leyang Yu, Hongliang Rao, Zhushi Marine Engineering Institute Provincial Key Laboratory of Naval Architecture＆Ocean Engineering Jimei University Xiamen China Institute of Vibration Shock and Noise State Key Laboratory of Mechanical System and Vibration Shanghai Jiaotong University Shanghai China

ISBN: (纸本)9781510868458

Magnetorheological materials are a class of smart materials whose rheological properties may be rapidly varied by a prescribed magnetic field. In this paper, a new shear-mode semi-active dynamic vibration absorber (SDVA) is designed based on the stiffness variable characteristics of magneto-rheological elastomers. Semi-active vibration absorber is applied for a marine gearbox and the natural frequency-shift performance of the absorber is tested. The natural frequencies of the SDVA under different magnetic fields and temperatures are evaluated by an experiment test rig. Experimental results show that the natural frequency of SDVA has a decreasing trend as the temperature is increased. However, it has an increasing trend with an increase in the control current at the same temperature situation. The influence tendency of the natural frequencies of MRE-based SDVA is discussed. The effect of temperature is more obvious than the control current. © 25th International Congress on Sound and Vibration 2018, ICSV 2018: Hiroshima Calling. All rights reserved.

关键词： Intelligent materials

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An efficient methodology for power modeling and simulation of modern cell-based microprocessors

An efficient methodology for power modeling and simulation o...

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Midwest Symposium on Circuits and systems (MWSCAS)

作者： Ge Zhang Weiwu Hu Institute of Computing Technology Key Laboratory of Computer System and Architecture Beijing China

This paper presents a methodology for high-level power modeling of cell-based processors. A flexible power model library, which can automatically generate detailed power data for actual circuits of each part of given processor, is developed and annotated dynamically for architecture-level power simulator. According to this method, the dynamic power, leakage power and even area and cell counts can be accurately estimated, and the preliminary power validation for a MIPS microprocessor proves our methodology to be effective and highly correlated, with only small errors comparing with the gate-level power analysis.

关键词： Microprocessors Circuit simulation Libraries Adders Circuit synthesis Power system modeling Analytical models Content addressable storage Power generation Flexible printed circuits

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GPU-based time parallel cache simulator

GPU-based time parallel cache simulator

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2010 IEEE Youth Conference on Information, Computing and Telecommunications, YC-ICT 2010

作者： Ma, Junjie Wan, Han Gao, Xiaopeng Long, Xiang State Key Laboratory of Virtual Reality Technology and System School of Computer Science and Engineering Beihang University Xueyuan Rd. 37 100191 Beijing China

ISBN: (纸本)9781424488841

We present the design of time parallel trace-driven cache simulation for the purpose of evaluating different cache architectures. Due to the long simulation cycles, traditional sequential simulation methods are no longer practical. An obvious way to achieve fast parallel simulation is time parallel. It splits the whole trace into small slices which are assigned to parallel processors for concurrent simulation. In this paper, we introduce a novel time parallel multi-configuration simulation on single pass method. It exploits time partitioning as the main sources of parallelism and takes the full advantage of the computational capability offered by the Compute Unified Device architecture (CUDA) on the GPU. Our experimental results demonstrate that the cache simulator based on GPU platform gains 1.91x performance improvement compared to traditional serial algorithm. © 2010 IEEE.

关键词： Graphics processing unit

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