Data parallelism in Fortran 90 and High Performance Fortran

These are lecture notes for 2 to 3 lectures introducing High Performance Fortran (HPF). The first lecture describes the data parallel features of Fortran 90, since these are important for writing efficient HPF programs. The second lecture introduces the Distributed Memory MIMD computer architecture and the ways in which it can be programmed, and motivates the use of the HPF language. The third lecture introduces HPF's data distribution features. These lecture notes are also available in gzipped Poscript form (100 KBytes).

Contents

1. Data Parallelism in Fortran 90

Introduction

Data parallelism

Some terminology for arrays

Array sections

Shape of an array section

Semantics of array assignment

Logical array expressions

WHERE statement and construct

Intrinsic functions

Examples

2. Exploiting Data Parallelism

Vector and SIMD machines

Distributed memory MIMD machines

SPMD programming model

Message-passing

Automatic parallelisation

3. High Performance Fortran (HPF)

Introduction

Directives

Data mapping in HPF

Templates and processors

Alignment

Distribution

Example