Sophia Corwell

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Supercomputers are composed of many diverse components , operated at a variety of scales, and function as a coherent whole. The resulting logs are thus diverse in format, interrelated at multiple scales, and provide evidence of faults across subsystems. When combined with system configuration information, insights on both the downstream effects and upstream(More)
This thesis is concerned with understanding the behavior of complex systems, particularly in the common case where instrumentation data is noisy or incomplete. We begin with an empirical study of logs from production systems, which characterizes the content of those logs and the challenges associated with analyzing them automatically , and present an(More)
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