• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 1
  • Tagged with
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Hardware Techniques for High-Performance Transactional Memory in Many-Core Chip Multiprocessors / Técnicas Hardware para Sistemas de Memoria Transaccional de Alto Rendimiento en Procesadores Multinúcleo

Titos Gil, José Rubén 08 November 2011 (has links)
Esta tesis investiga la implementación hardware eficiente de los sistemas de memoria transaccional (HTM) en un chip multiprocesador escalable (CMP), identificando aspectos que limitan el rendimiento y proponiendo técnicas que solventan dichas patologías. Las contribuciones de la tesis son varios diseños HTM complementarios que alcanzan un rendimiento robusto y evitan comportamientos patológicos, mediante la introducción de flexibilidad y adaptabilidad, sin que dichas técnicas apenas supongan un incremento en la complejidad del sistema global. Esta disertación considera tanto sistemas HTM de política ansiosa como aquellos diseñados bajo el enfoque perezoso, y afrontamos las sobrecargas en el rendimiento que son inherentes a cada política. Quizá la contribución más relevante de esta tesis es ZEBRA, un sistema HTM de política híbrida que adapta su comportamiento en función de las características dinámicas de la carga de trabajo. / This thesis focuses on the hardware mechanisms that provide optimistic concurrency control with guarantees of atomicity and isolation, with the intent of achieving high-performance across a variety of workloads, at a reasonable cost in terms of design complexity. This thesis identifies key inefficiencies that impact the performance of several hardware implementations of TM, and proposes mechanisms to overcome such limitations. In this dissertation we consider both eager and lazy approaches to HTM system design, and address important sources of overhead that are inherent to each policy. This thesis presents a hybrid-policy, adaptable HTM system that combines the advantages of both eager and lazy approaches in a low complexity design. Furthermore, this thesis investigates the overheads of the simpler, fixed-policy HTM designs that leverage a distributed directory-based coherence protocol to detect data races over a scalable interconnect, and develops solutions that address some performance degrading factors.

Page generated in 0.1161 seconds