Shared Memory Consistency Models: A Tutorial

https://www.lri.fr/~cecile/ENSEIGNEMENT/IPAR/Exposes/Consistency.pdf

经典必读

Abstraction

parallel systems that support the shared memory abstraction are becoming widely accepted in many areas of computing

shared memory abstraction : different from OS ? by hardware ?

We focus on consistency models proposed for hardware-based sharedmemory systems

The shared memory or single address space abstraction provides several advantages over the message passing (or private memory) abstraction by presenting a more natural transition from uniprocessors and by simplifying difficult programming tasks such as data partitioning and dynamic load distribution

why should use unimemory ? what are the two terminology

1 Introduction

We begin with a short note on who should be concerned with the memory consistency model of a system. We next describe the programming model offered by sequential consistency, and the implications of sequential consistency on hardware and compiler implementations. We then describe several relaxed memory consistency models using a simple and uniform terminology. The last part of the article describes the programmer-centric view of relaxed memory consistency models

2 Memory Consistency Models - Who Should Care

3 Memory Semantics in Uniprocessor Systems

4 Understanding Sequential Consistency

5 Implementing Sequential Consistency

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