Cache Coherence in Large Scale Shared Memory Multiprocessors

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Table of Contents

Cache Coherence in Large Scale Shared Memory Multiprocessors

Admin

Review: Snoopy Coherence

Review: MSI State Diagram

Large Scale Shared Memory Multiprocessors

Directory Based Cache Coherence

Directory Example

Centralized Directory

Distributed Directory

Directory Nomenclature

Limited Pointer Directory

Replacement Notification

Coarse Vector and Sparse Directories

Software Assistance

Chaining (SCI)

Chaining (SCI)

Coherent Interconnects

Cache Only Memory Architecture

Compiler Directed Coherence

Compiler Directed Coherence (Continued)

What’s Ahead

 Author: Alvin R. Lebeck

Email: alvy@cs.duke.edu

Home Page: http://www.cs.duke.edu/~alvy