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This paper examines methods of approximating the optimum checkpoint restart strategy for minimizing application run time on a system exhibiting Poisson single component failures. Two different models will be developed and compared. We will begin with a simplified cost function that yields a first-order model. Then we will derive a more complete cost(More)
As computational clusters rapidly grow in both size and complexity, system reliability and, in particular, application resilience have become increasingly important factors to consider in maintaining efficiency and providing improved computational performance over predecessor systems. One commonly used mechanism for providing application fault tolerance in(More)
As computational cluster computers rapidly grow in both size and complexity, system reliability and, in particular, application resilience have become increasingly important factors to consider in maintaining efficiency and providing improved compute performance over predecessor systems. One commonly used mechanism for providing application fault tolerance(More)
While measures such as raw compute performance and system capacity continue to be important factors for evaluating cluster performance, such issues as system reliability and application resilience have become increasingly important as cluster sizes rapidly grow. Although efforts to directly improve fault-tolerance are important, it is also essential to(More)
The massive scale of current and next-generation massively parallel processing (MPP) systems presents significant challenges related to fault tolerance. For applications that perform periodic checkpoints, the choice of the checkpoint interval, the period between checkpoints, can have a significant impact on the execution time of the application. Finding the(More)
Cardiovascular disease is the largest killer of women internationally and women often suffer inferior outcomes following an acute cardiac event as compared to men. A gendered approach to investigating cardiovascular disease in women incorporates the unique social, cultural, and economic circumstances that being a woman brings to the health encounter. The(More)
The role of case reports in increasing our understanding of health care is growing. To date, case reports have mainly been used as a singular entity: to describe individual cases or cases managed by an individual practitioner. The feature of these reports has also been quite singular: usually to either identify a unique symptom, presentation, or adverse(More)
Foreword i Acknowledgements ii List of Tables and Figures iii Executive Summary 1 Chapter 1 Introduction 9 Chapter 2 Design and Methodology 21 Chapter 3 The Mapping Process 29 Chapter 4 Analysis of Data and Results 34 Chapter 5 Discussion and Conclusions 53 References 63 Appendix 1 66 Nurses and midwives have always played a vital role in caring for(More)