Reconfigurable Fault Tolerance

Jacobs, Adam; Cieslewski, Grzegorz; George, Alan; Gordon‐Ross, Ann; Lam, Herman

doi:10.1145/2392616.2392619

Cited by 63 publications

(11 citation statements)

References 21 publications

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“…[64][65][66] Acoustic wave frequencies and in-plane thermal diffusivity are measured directly, and the acoustic wave speeds can be calculated from those frequencies and the measured projected fringe spacing. Figure 1c and d show, respectively, top-and frontview schematics of the experimental geometry used in the I 3 TGS system. For in situ irradiations, the sample is placed at a slightly off-normal incidence to the ion beam to reduce the effects of ion channeling in single-crystal samples.…”

Section: Passive and Active Listening Techniquesmentioning

confidence: 99%

“…Over long periods, these changes may lead to degradation and eventual component failure in systems including nuclear power reactors 1,2 and space systems. 3,4 Radiationinduced changes may also be used as a forensic tool in either accident scenarios or nuclear security applications to determine the environments to which materials have been exposed. 5 Targeted applications of radiation have been used as nanoscale device processing tools for decades, most notably in the semiconductor industry.…”

Section: Introductionmentioning

confidence: 99%

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Listening to Radiation Damage In Situ: Passive and Active Acoustic Techniques

Dennett

Choens

Taylor

et al. 2019

JOM

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Knowing when, why, and how materials evolve, degrade, or fail in radiation environments is pivotal to a wide range of fields from semiconductor processing to advanced nuclear reactor design. A variety of methods, including optical and electron microscopy, mechanical testing, and thermal techniques, have been used in the past to successfully monitor the microstructural and property evolution of materials exposed to extreme radiation environments. Acoustic techniques have also been used in the past for this purpose, although most methodologies have not achieved widespread adoption. However, with an increasing desire to understand microstructure and property evolution in situ, acoustic methods provide a promising pathway to uncover information not accessible to more traditional characterization techniques. This work highlights how two different classes of acoustic techniques may be used to monitor material evolution during in situ ion beam irradiation. The passive listening technique of acoustic emission is demonstrated on two model systems, quartz and palladium, and shown to be a useful tool in identifying the onset of damage events such as microcracking. An active acoustic technique in the form of transient grating spectroscopy is used to indirectly monitor the formation of small defect clusters in copper irradiated with self-ions at high temperature through the evolution of surface acoustic wave speeds. These studies together demonstrate the large potential for using acoustic techniques as in situ diagnostics. Such tools could be used to optimize ion beam processing techniques or identify modes and kinetics of materials degradation in extreme radiation environments.

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Section: Passive and Active Listening Techniquesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Listening to Radiation Damage In Situ: Passive and Active Acoustic Techniques

Dennett

Choens

Taylor

et al. 2019

JOM

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“…Due to the shrinking size of electronic devices they become more vulnerable in terms of damaging interaction with radiation. The primary short-term radiation effect is called Single Event Effect (SEE) [6]. SEEs occur when a charged particle penetrates sensitive nodes within electronic devices.…”

Section: Radiation Analysismentioning

confidence: 99%

Broadband FPGA payload processing in a harsh radiation environment

Rittner

Robert

Kolb

et al. 2014

2014 NASA/ESA Conference on Adaptive Hardware and Systems (AHS)

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In this paper, we propose a concept for broadband Digital Signal Processing under consideration of mitigation schemes to increase the reliability. We take Single Event Upsets into account to guarantee a reliable operation during a In-Orbit-Verification. It will be performed on the Fraunhofer On-Board Processor, which is a dynamically reconfigurable On-Board Processor platform based on two space-grade Virtex-5QV FPGAs. A master and slave FPGA concept enables broadband Digital Signal Processing experiments, which are controlled and monitored by the high reliable master FPGA. Each FPGA processes a separated signal path of the Fraunhofer On-Board Processor. The first FPGA executes scrubbing of both FPGAs, measures the current radiation and observes the whole system with a fault management. The second FPGA realizes only the broadband Digital Signal Processing, which results in more usable resources. We analyze the impact of the radiation to point out the influence to the FPGAs. A case study demonstrates a Digital Down Converter for broadband Digital Signal Processing. This hardware verification evaluates a 306 Mbit/s broadband signal, modulated with Quadrature Phase-Shift Keying. It results in a Signal-to-Noise Ratio of 19.29 dB. Due to separation of mitigation schemes and broadband Digital Signal Processing the system operates reliable and the resources are used efficient

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“…Thus, it is typical to design the satellite system with radiation-hardened processors [4] which generally have poorer performance than normal ones. In order to meet the reliability and performance requirements at the same time, the reconfigurable computing approach with field-programmable gate arrays (FPGAs) has been proposed, where various fault-tolerance techniques can be incorporated [5,6,7].…”

Section: Introductionmentioning

confidence: 99%

Temperature Sensor Assisted Lifetime Enhancement of Satellite Embedded Systems via Multi-Core Task Mapping and DVFS

Kim

Yang

2019

Sensors

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Recently, thanks to the miniaturization and high performance of commercial-off-the-shelf (COTS) computer systems, small satellites get popular. However, due to the very expensive launching cost, it is critical to reduce the physical size and weight of the satellite systems such as cube satellites (CubeSats), making it infeasible to install high capacity batteries or solar panels. Thus, the low-power design is one of the most critical issues in the design of such systems. In addition, as satellites make a periodic revolution around the Earth in a vacuum, their operating temperature varies greatly. For instance, in a low earth orbit (LEO) CubeSats, the temperatures vary from 30 to −30 degrees Celsius, resulting in a big thermal cycle (TC) in the electronic parts that is known to be one of the most critical reliability threats. Moreover, such LEO CubeSats are not fully protected by active thermal control and thermal insulation due to the cost, volume, and weight problems. In this paper, we propose to utilize temperature sensors to maximize the lifetime reliability of the LEO satellite systems via multi-core mapping and dynamic voltage and frequency scaling (DVFS) under power constraint. As conventional reliability enhancement techniques primarily focus on reducing the temperature, it may cause enlarged TCs, making them even less reliable. On the contrary, we try to maintain the TC optimal in terms of reliability with respect to the given power constraint. Experimental evaluation shows that the proposed technique improves the expected lifetime of the satellite embedded systems by up to 8.03 times in the simulation of Nvidia’s Jetson TK1.

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Reconfigurable Fault Tolerance

Cited by 63 publications

References 21 publications

Listening to Radiation Damage In Situ: Passive and Active Acoustic Techniques

Listening to Radiation Damage In Situ: Passive and Active Acoustic Techniques

Broadband FPGA payload processing in a harsh radiation environment

Temperature Sensor Assisted Lifetime Enhancement of Satellite Embedded Systems via Multi-Core Task Mapping and DVFS

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