IFS Documentation front page

I Observations
II Assimilation
III Dynamics
IV Physics
V Ensemble
VI Technical
VII Waves

Part VI: Technical and computational procedures

CHAPTER 3 Parallel Implementation

Table of contents

3.1 Introduction

3.2 The parallel environment

3.3 Data independence

3.3.1 Grid point computations

3.3.2 Fourier transform.

3.3.3 Legendre transform

3.3.4 Spectral computations.

3.4 Data structures

3.4.1 Grid-point data

3.4.2 Grid-point blocking.

3.4.3 The NPROMA block

3.4.4 Fourier data

3.5 Data distribution

3.5.1 Grid-point calculations

3.5.2 Fourier-space calculations

3.6 Distributed vectors

3.6.1 Introduction

3.6.2 Using distributed vectors

3.6.3 Optimizing distributed vector code

3.6.4 Warnings

3.7 Semi-Lagrangian calculation

3.7.1 Introduction

3.7.2 SLCSET

3.7.3 SLRSET

3.7.4 SLCOMM

3.8 Program flow with the focus on distributed-memory details

3.8.1 Overview

3.8.2 Constraints

3.8.3 Computer code organization