Concepts for High Availability in Scientific High-End Computing
نویسنده
چکیده
Scientific high-end computing (HEC) has become an important tool for scientists world-wide to understand problems, such as in nuclear fusion, human genomics and nanotechnology. Every year, new HEC systems emerge on the market with better performance and higher scale. With only very few exceptions, the overall availability of recently installed systems has been lower in comparison to the same deployment phase of their predecessors. In contrast to the experienced loss of availability, the demand for continuous availability has risen dramatically due to the recent trend towards capability computing. In this paper, we analyze the existing deficiencies of current HEC systems and present several high availability concepts to counter the experienced loss of availability and to alleviate the expected impact on next-generation systems. We explain the application of these concepts to current and future HEC systems and list past and ongoing related research. This paper closes with a short summary of the presented work and a brief discussion of future efforts.
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