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High-dimensional torus networks are becoming common in flagship HPC systems, with five of the top ten systems in June 2014 having networks with more than three dimensions. Although such networks combine performance with scalability at reasonable cost, the challenge of how to achieve optimal performance remains. Tools are needed to help understand how well the traffic is distributed among the many...
Over the past years, a considerable amount of effort has been devoted to the definition and implementation of techniques for the optimization and acceleration of applications on various (reconfigurable) computing platforms. Among these techniques, the extension of a given instruction-set architecture with custom instructions has become a common approach. Custom instructions effectively reduce the...
User experience design is crucial to achieve a successful intelligent product design. By taking the user experience design of a xylophone playing robot as an example, this paper attempts to identify the prominent attributes in the user experience design of intelligent products, and to find the general norms guiding the design. Both the pragmatic and the hedonic aspects have been investigated via questionnaires...
The PAPI library provides transparent access to new classes of interfaces, including virtualized, power and energy measurements. Existing programs that already support PAPI instrumentation for CPU performance measurements can quickly be adapted to measure these new events with a simple PAPI upgrade.
Almost every computer user has encountered an un-responsive system failure or system hang, which leaves the user no choice but to power off the computer. In this paper, the causes of such failures are analyzed in detail and one empirical hypothesis for detecting system hang is proposed. This hypothesis exploits a small set of system performance metrics provided by the OS itself, thereby avoiding modifying...
Steganography is one of the most powerful techniques to conceal the existence of hidden secret data inside a cover object. Images are the most popular cover objects for steganography, and thus the importance of image steganography. Embedding secret information inside images requires intensive computations, and therefore, designing steganography in hardware speeds up steganography. This work presents...
There is no standard method for creating a hardware reliability prediction. Therefore, predictions vary widely in terms of methodological rigor, data quality, extent of analysis, and uncertainty. Documentation of the prediction process employed is often not presented. These inconsistencies can leave the user of the prediction confused, uncertain of the prediction's true value, and unable to compare...
National Instruments® (NI) pioneered virtual instrumentation more than 25 years ago with the introduction of LabVIEW — fully graphical development system. On several platforms they offer software products that deliver the proven productivity gains of virtual instrumentation. Over twenty years at the Department of Measurement and Control VSB — Technical University of Ostrava the students have taken...
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