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      • Bilkent Theses
      • Theses - Department of Computer Engineering
      • Dept. of Computer Engineering - Master's degree
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      Adaptive thread and memory access schelduling in chip multiprocessors

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      Author
      Aktürk, İsmail
      Advisor
      Öztürk, Özcan
      Date
      2013
      Publisher
      Bilkent University
      Language
      English
      Type
      Thesis
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      Abstract
      The full potential of chip multiprocessors remains unexploited due to architecture oblivious thread schedulers used in operating systems, and thread-oblivious memory access schedulers used in off-chip main memory controllers. For the thread scheduling, we introduce an adaptive cache-hierarchy-aware scheduler that tries to schedule threads in a way that inter-thread contention is minimized. A novel multi-metric scoring scheme is used that specifies the L1 cache access characteristics of a thread. The scheduling decisions are made based on multi-metric scores of threads. For the memory access scheduling, we introduce an adaptive compute-phase prediction and thread prioritization scheme that efficiently categorize threads based on execution characteristics and provides fine-grained prioritization that allows to differentiate threads and prioritize their memory access requests accordingly.
      Keywords
      Adaptive Scheduling
      Chip Multiprocessors
      Inter-thread Contention
      Thread Phase Prediction
      Multi-metric Scoring
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      http://hdl.handle.net/11693/15856
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      • Dept. of Computer Engineering - Master's degree 511
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