I/O Strategies for the T3E

3/15/99


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Table of Contents

I/O Strategies for the T3E

T3E Overview

Filesystems

Types of I/O

I/O Strategies - Exclusive access files

I/O Strategies - Communication and I/O PE

I/O Strategies - Shared files

Cray FFIO library

The assign command

assign Examples

assign Examples

bufa FFIO layer

global FFIO layer

File positioning with the global FFIO layer

FFIO considerations

More on FFIO

More on assign

Further Information

MPI I/O

MPI I/O Definitions

Fileviews

Fileviews (cont.)

Fileview (cont.)

MPI_File_set_view

MPI Info object

Open and Close

Utility routines

Query routines

Data access routines

Summary of access routines

Summery of access routines (cont.)

T3E Implementation

Examples

Naming convention

Filetype Example

Filetype Example

Individual, blocking, non-collective

Further Information on MPI I/O

Author: Tom DeBoni

Email: TMDeBoni@LBL.GOV

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