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dc.contributor.advisorYalamanchili, Sudhakar
dc.contributor.authorSong, William J.
dc.date.accessioned2016-01-07T17:35:55Z
dc.date.available2016-01-07T17:35:55Z
dc.date.created2015-12
dc.date.issued2015-11-05
dc.date.submittedDecember 2015
dc.identifier.urihttp://hdl.handle.net/1853/54399
dc.description.abstractThe objective of this research is to characterize and manage lifetime reliability, microarchitectural performance, and power tradeoffs in multicore processors. This dissertation is comprised of three research themes; 1) modeling and simulation method of interacting multicore processor physics, 2) characterization and management of performance and lifetime reliability tradeoff, and 3) extending Amdahl’s Law for understanding lifetime reliability, performance, and energy efficiency of heterogeneous processors. With continued technology scaling, processor operations are increasingly dominated by multiple distinct physical phenomena and their coupled interactions. Understanding these behaviors requires the modeling of complex physical interactions. This dissertation first presents a novel simulation framework that orchestrates interactions between multiple physical models and microarchitecture simulators to enable research explorations at the intersection of application, microarchitecture, energy, power, thermal, and reliability. Using this framework, workload-induced variation of device degradation is characterized, and its impacts on processor lifetime and performance are analyzed. This research introduces a new metric to quantify performance-reliability tradeoff. Lastly, the theoretical models of heterogeneous multicore processors are proposed for understanding performance, energy efficiency, and lifetime reliability consequences. It is shown that these system metrics are governed by Amdahl’s Law and correlated as a function of processor composition, scheduling method, and Amdahl’s scaling factor. This dissertation highlights the importance of multidimensional analysis and extends the scope of microarchitectural studies by incorporating the physical aspects of processor operations and designs.
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.publisherGeorgia Institute of Technology
dc.subjectComputer architecture
dc.subjectLifetime reliability
dc.subjectModeling
dc.subjectPerformance
dc.subjectEnergy efficiency
dc.subjectHeterogeneous processor
dc.titleManaging lifetime reliability, performance, and power tradeoffs in multicore microarchitectures
dc.typeDissertation
dc.description.degreePh.D.
dc.contributor.departmentElectrical and Computer Engineering
thesis.degree.levelDoctoral
dc.contributor.committeeMemberLim, Sung Kyu
dc.contributor.committeeMemberMukhopadhyay, Saibal
dc.contributor.committeeMemberKim, Hyesoon
dc.contributor.committeeMemberQureshi, Moinuddin
dc.contributor.committeeMemberRodrigues, Arun
dc.date.updated2016-01-07T17:35:55Z


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