Graduate Thesis Or Dissertation
 

Performance improvement with logic-level speculation

Público Deposited

Contenido Descargable

Descargar PDF
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/vh53x027w

Descriptions

Attribute NameValues
Creator
Abstract
  • Current superscalar microprocessors' performance depends on its frequency and the number of useful instructions that can be processed per cycle (IPC). Higher frequency is achieved with process advancement, new circuit techniques, and microarchitectural improvement. Number of instructions processed per cycle depends mainly on microarchitecture techniques that exploit parallelism both spatially and temporally. Most techniques employed to exploit parallelism spatially tend to increase circuit complexity and may affect the frequency thus offset the performance gain intended. Finer pipeline stages exploit parallelism temporally but may suffer reduced efficiency when there are dependencies and hazards in the long pipeline. Careful balancing between frequency and useful number of instructions processed per cycle is one of the important microprocessor design tradeoffs. In this thesis we propose a method called approximation to reduce the logic delay of a pipe-stage. The basic idea of approximation is to implement the logic function partially instead of fully. Most of the time the partial implementation gives the correct result as if the function is implemented fully but with fewer gates delay allowing a higher pipeline frequency. We apply this method on three logic blocks. Simulation results show that this method provides some performance improvement for a wide-issue superscalar if these stages are finely pipelined.
Resource Type
Fecha Disponible
Fecha de Emisión
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Subject
Declaración de derechos
Publisher
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome, 8-bit Grayscale) using ScandAll PRO 1.8.1 on a Fi-6670 in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces

Relaciones

Parents:

This work has no parents.

En Collection:

Elementos

Miniatura Título Fecha de subida Visibilidad Acciones
file details LiuTong2001.pdf 2017-08-19 Público Descargar