Preface

This document provides information about how to use KAP Fortran software on Compaq OpenVMS Alpha systems.

Intended Audience

This document is a guide for KAP users working with Fortran on OpenVMS Alpha systems.

Structure of This Document

This document is organized into the following chapters and appendixes:

Chapter 1 provides an introduction to KAP Fortran for OpenVMS Alpha systems.
Chapter 2 presents information on how to run KAP.
Chapter 3 presents information on how to compile and run programs with KAP on symmetric multiprocessor systems.
Chapter 4 describes how KAP treats Fortran constructs.
Chapter 5 describes the command qualifiers used to alter KAP defaults, such as setting KAP optimization levels and enabling or disabling classes of transformations.
Chapter 6 presents directives to alter KAP defaults. Directives are like command qualifiers, except they appear within a program and may be changed on a loop-by-loop basis.
Chapter 7 specifies KAP assertions that can provide KAP with additional information about the input program that would normally be unknown at compile time.
Chapter 8 provides additional information on subprogram inlining, Interprocedural Analysis (IPA), and the KAP command qualifiers and directives that control them.
Chapter 9 shows examples of the transformations that KAP performs to enhance the code.
Chapter 10 describes the information available in the optional KAP listing and the messages that KAP produces.
Appendix A lists the Compaq extensions to Fortran.
Appendix B describes data dependence analysis and explains how KAP uses this information to determine if a given loop can be optimized.
Appendix C lists the diagnostic messages that can appear in the optional annotated program listing.
Appendix D contains a warning about processing programs that violate the rules of Fortran.

Associated Documents

This document is part of the KAP documentation set that also includes:

KAP Fortran for OpenVMS Installation Guide
KAP Fortran Version 3.2 for OpenVMS Cover Letter

Conventions

The Fortran 90 icon in the margin indicates that the accompanying section of information is unique to Fortran 90 (does not apply to Fortran 77).

Fortran refers to Compaq Fortran for OpenVMS Alpha systems.

The following are equivalent terms in this document: KAP and KAP Fortran.

The following table lists the other conventions used in this guide.

Convention Description

italic type Italic type indicates complete titles of manuals.

lowercase Commands are usually presented in lowercase. The KAP command line, however, is not case sensitive.

< > Angle brackets denote command input you replace with the appropriate value.

( ) Parentheses containing a single command value denote the default value. For example, (/optimize=5) denotes 5 is the default value.
Parentheses containing hyphenated value ranges denote that you choose a value from the range.

[ ] Square brackets denote optional items.

Defaults Unless specified otherwise, the code examples in this manual were run with the qualifiers /optimize=5, /roundoff=3, /scalaropt=3, and /unroll=1.

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Convention	Description
italic type	Italic type indicates complete titles of manuals.
lowercase	Commands are usually presented in lowercase. The KAP command line, however, is not case sensitive.
< >	Angle brackets denote command input you replace with the appropriate value.
( )	Parentheses containing a single command value denote the default value. For example, (/optimize=5) denotes 5 is the default value. Parentheses containing hyphenated value ranges denote that you choose a value from the range.
[ ]	Square brackets denote optional items.
Defaults	Unless specified otherwise, the code examples in this manual were run with the qualifiers /optimize=5, /roundoff=3, /scalaropt=3, and /unroll=1.

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Command-Line Qualifiers