XL Fortran for Linux documentation library

IBM XL Fortran for Linux, V16.1 supports POWER9 servers and the OpenMP 4.5 specification for productive programming

This announcement letter announces IBM XL Fortran for Linux, V16.1.

Last updated: 24 April 2018

Documentation (online HTML format)

The HTML-based online product documentation for IBM XL Fortran for Linux, V16.1.1 is viewable in IBM Knowledge Center.

Last updated: 30 November 2018

Documentation (PDF format)

A collection of product documentation files for IBM XL Fortran for Linux, V16.1.1. For cross-reference links to other PDF documents to work, download the related PDF documents to the same directory on your local machine.

Last updated: 30 November 2018

IBM XL C/C++ and XL Fortran compilers on Power architectures overview

This paper contains an overview of IBM XL C/C++ and XL Fortran compilers, outlining their history, unique capabilities and cross-platform support. You can also find a performance overview and a summary of their current strategic advantages.

Last updated: 30 November 2018

Code optimization with the IBM XL compilers on Power architectures

This document introduces the most important optimization capabilities and describes the compiler options, source constructs, and techniques that you can use to maximize the performance of your application.

Last updated: 30 November 2018

IBM XL Fortran compilers features

The IBM XL Fortran compilers are full-featured Fortran language compilers available for AIX, Linux on Power, and Blue Gene. This document provides an overview of XL Fortran features and how they can help you with your Fortran development needs.

Last updated: 30 November 2018

IBM XL Fortran for Linux, V16.1 supports POWER9 servers and the OpenMP 4.5 specification for productive programming

This announcement letter announces IBM XL Fortran for Linux, V16.1.

Last updated: 24 April 2018

Documentation for little endian distributions (online HTML format)

The HTML-based online product documentation for IBM XL Fortran for Linux, V16.1, for little endian distributions is viewable in IBM Knowledge Center.

Last updated: 27 April 2018

Documentation for little endian distributions (PDF format)

A collection of product documentation files for IBM XL Fortran for Linux, V16.1, for little endian distributions, including getting started and installation guides. For cross-reference links to other PDF documents to work, download the related PDF documents to the same directory on your local machine.

Last updated: 27 April 2018

IBM XL C/C++ and XL Fortran compilers on Power architectures overview

This paper contains an overview of IBM XL C/C++ and XL Fortran compilers, outlining their history, unique capabilities and cross-platform support. You can also find a performance overview and a summary of their current strategic advantages.

Last updated: 27 April 2018

Code optimization with the IBM XL compilers on Power architectures

This document introduces the most important optimization capabilities and describes the compiler options, source constructs, and techniques that you can use to maximize the performance of your application.

Last updated: 27 April 2018

IBM XL Fortran compilers features

The IBM XL Fortran compilers are full-featured Fortran language compilers available for AIX, Linux on Power, and Blue Gene. This document provides an overview of XL Fortran features and how they can help you with your Fortran development needs.

Last updated: 27 April 2018

IBM XL C/C++ for Linux, V13.1.6 (on little endian distributions) and Fortran for Linux, V15.1.6 (on little endian distributions) deliver IBM POWER9 exploitation and OpenMP 4.5 enhancements to offload to the GPU accelerator

This announcement letter announces IBM XL Fortran for Linux, V15.1.6.

Last updated: 5 December 2017

Documentation for little endian distributions (online HTML format)

The HTML-based online product documentation for IBM XL Fortran for Linux, V15.1.6, for little endian distributions is viewable in IBM Knowledge Center.

Last updated: 15 December 2017

Documentation for big endian distributions (online HTML format)

For information about big endian distributions, see the HTML-based online product documentation for IBM XL Fortran for Linux, V15.1 in IBM Knowledge Center. Big endian features introduced in this release is covered in Documentation errata for IBM XL Fortran for Linux, V15.1.

Last updated: 06 June 2014

Documentation for little endian distributions (PDF format)

A collection of product documentation files for IBM XL Fortran for Linux, V15.1.6, for little endian distributions, including getting started and installation guides. For cross-reference links to other PDF documents to work, download the related PDF documents to the same directory on your local machine.

Last updated: 15 December 2017

Documentation for big endian distributions (PDF format)

A collection of product documentation files for IBM XL Fortran for Linux, V15.1, for big endian distributions, including getting started and installation guides. Cross-reference links to other PDF documents might not work online. In this case, download the related PDF documents to the same directory on your local machine.

Last updated: 12 Dec 2014

IBM XL C/C++ and XL Fortran compilers on Power architectures overview

This paper contains an overview of IBM XL C/C++ and XL Fortran compilers, outlining their history, unique capabilities and cross-platform support. You can also find a performance overview and a summary of their current strategic advantages.

Last updated: 15 December 2017

Code optimization with the IBM XL compilers on Power architectures

This document introduces the most important optimization capabilities and describes the compiler options, source constructs, and techniques that you can use to maximize the performance of your application.

Last updated: 15 December 2017

IBM XL Fortran compilers features

The IBM XL Fortran compilers are full-featured Fortran language compilers available for AIX, Linux on Power, and Blue Gene. This document provides an overview of XL Fortran features and how they can help you with your Fortran development needs.

Last updated: 15 December 2017

IBM XL Fortran for Linux, V15.1.5 (on little endian distributions) offers a no-charge community edition and XL C/C++ for Linux, V13.1.5 and XL Fortran for Linux, V15.1.5 supports partial OpenMP 4.5

This announcement letter announces IBM XL Fortran for Linux, V15.1.5.

Last updated: 14 November 2016

Documentation for little endian distributions (online HTML format)

The HTML-based online product documentation for IBM XL Fortran for Linux, V15.1.5, for little endian distributions is viewable in IBM Knowledge Center.

Last updated: 15 December 2016

Documentation for big endian distributions (online HTML format)

For information about big endian distributions, see the HTML-based online product documentation for IBM XL Fortran for Linux, V15.1 in IBM Knowledge Center. Big endian features introduced in this release is covered in Documentation errata for IBM XL Fortran for Linux, V15.1.

Last updated: 06 June 2014

Documentation for little endian distributions (PDF format - English)

A collection of product documentation files for IBM XL Fortran for Linux, V15.1.5, for little endian distributions, including getting started and installation guides. For cross-reference links to other PDF documents to work, download the related PDF documents to the same directory on your local machine.

The Japanese version of the product documentation files is also available at PDF format - Japanese.

Last updated: 15 December 2016

Documentation for big endian distributions (PDF format)

A collection of product documentation files for IBM XL Fortran for Linux, V15.1, for big endian distributions, including getting started and installation guides. Cross-reference links to other PDF documents might not work online. In this case, download the related PDF documents to the same directory on your local machine.

Last updated: 12 Dec 2014

Performance Optimization and Tuning Techniques for IBM Power Systems Processors, including IBM POWER8

This IBM Redbooks publication focuses on gathering the correct technical information, and laying out simple guidance for optimizing code performance on IBM POWER8 systems that run the AIX, IBM i, or Linux operating systems.

Last updated: 28 August 2015

IBM XL C/C++ and XL Fortran compilers on Power architectures overview

This paper contains an overview of IBM XL C/C++ and XL Fortran compilers, outlining their history, unique capabilities and cross-platform support. You can also find a performance overview and a summary of their current strategic advantages.

Last updated: 15 December 2016

Code optimization with the IBM XL compilers on Power architectures

This document introduces the most important optimization capabilities and describes the compiler options, source constructs, and techniques that you can use to maximize the performance of your application.

Last updated: 15 December 2016

IBM XL Fortran compilers features

The IBM XL Fortran compilers are full-featured Fortran language compilers available for AIX, Linux on Power, and Blue Gene. This document provides an overview of XL Fortran features and how they can help you with your Fortran development needs.

Last updated: 15 December 2016

Targeting your applications – what little endian and big endian IBM XL Fortran compiler differences mean to you

The IBM POWER8 platform supports operating systems that use big endian or little endian byte ordering. Migrating programs written for a big endian operating system to a little endian operating system may require code changes to maintain program behaviour or results. This article describes the differences, new options, and intrinsic procedures and makes suggestions about code changes to port code to IBM XL Fortran on POWER8.

Last updated: 12 Dec 2014

XL Fortran for Linux, V15.1.4 supports CUDA Fortran programming while XL C/C++ for Linux, V13.1.4 delivers a no-charge community edition

This announcement letter announces IBM XL Fortran for Linux, V15.1.4.

Last updated: 5 April 2016

Documentation for little endian distributions (online HTML format)

The HTML-based online product documentation for IBM XL Fortran for Linux, V15.1.4, for little endian distributions is viewable in IBM Knowledge Center.

Last updated: 17 June 2016

Documentation for big endian distributions (online HTML format)

For information about big endian distributions, see the HTML-based online product documentation for IBM XL Fortran for Linux, V15.1 in IBM Knowledge Center. Big endian features introduced in this release is covered in Documentation errata for IBM XL Fortran for Linux, V15.1.

Last updated: 06 June 2014

Documentation for little endian distributions (PDF format)

A collection of product documentation files for IBM XL Fortran for Linux, V15.1.4, for little endian distributions, including getting started and installation guides. For cross-reference links to other PDF documents to work, download the related PDF documents to the same directory on your local machine.

Last updated: 17 June 2016

Documentation for big endian distributions (PDF format)

A collection of product documentation files for IBM XL Fortran for Linux, V15.1, for big endian distributions, including getting started and installation guides. Cross-reference links to other PDF documents might not work online. In this case, download the related PDF documents to the same directory on your local machine.

Last updated: 12 Dec 2014

Performance Optimization and Tuning Techniques for IBM Power Systems Processors, including IBM POWER8

This IBM Redbooks publication focuses on gathering the correct technical information, and laying out simple guidance for optimizing code performance on IBM POWER8 systems that run the AIX, IBM i, or Linux operating systems.

Last updated: 28 August 2015

IBM XL C/C++ and XL Fortran compilers on Power architectures overview

This paper contains an overview of IBM XL C/C++ and XL Fortran compilers, outlining their history, unique capabilities and cross-platform support. You can also find a performance overview and a summary of their current strategic advantages.

Last updated: 17 June 2016

Code optimization with the IBM XL compilers on Power architectures

This document introduces the most important optimization capabilities and describes the compiler options, source constructs, and techniques that you can use to maximize the performance of your application.

Last updated: 17 June 2016

IBM XL Fortran compilers features

The IBM XL Fortran compilers are full-featured Fortran language compilers available for AIX, Linux on Power, and Blue Gene. This document provides an overview of XL Fortran features and how they can help you with your Fortran development needs.

Last updated: 17 June 2016

Targeting your applications – what little endian and big endian IBM XL Fortran compiler differences mean to you

The IBM POWER8 platform supports operating systems that use big endian or little endian byte ordering. Migrating programs written for a big endian operating system to a little endian operating system may require code changes to maintain program behaviour or results. This article describes the differences, new options, and intrinsic procedures and makes suggestions about code changes to port code to IBM XL Fortran on POWER8.

Last updated: 12 Dec 2014

XL C/C++ for Linux V13.1.3 and XL Fortran for Linux, V15.1.3 deliver features of C11, C++11, Fortran 2008, and OpenMP 4.5 while XL C for AIX, XL C/C++ for AIX, and XL Fortran for AIX are refreshed

This announcement letter announces IBM XL Fortran for Linux, V15.1.3.

Last updated: 8 December 2015

Documentation for little endian distributions (online HTML format)

The HTML-based online product documentation for IBM XL Fortran for Linux, V15.1.3, for little endian distributions is viewable in IBM Knowledge Center.

Last updated: 1 August 2016

Documentation for big endian distributions (online HTML format)

For information about big endian distributions, see the HTML-based online product documentation for IBM XL Fortran for Linux, V15.1 in IBM Knowledge Center. Big endian features introduced in this release is covered in Documentation errata for IBM XL Fortran for Linux, V15.1.

Last updated: 06 June 2014

Documentation for little endian distributions (PDF format - English)

A collection of product documentation files for IBM XL Fortran for Linux, V15.1.3, for little endian distributions, including getting started and installation guides. For cross-reference links to other PDF documents to work, download the related PDF documents to the same directory on your local machine.

The Japanese version of the product documentation files is also available at PDF format - Japanese.

Last updated: 1 August 2016

Documentation for big endian distributions (PDF format)

A collection of product documentation files for IBM XL Fortran for Linux, V15.1, for big endian distributions, including getting started and installation guides. Cross-reference links to other PDF documents might not work online. In this case, download the related PDF documents to the same directory on your local machine.

Last updated: 12 Dec 2014

Performance Optimization and Tuning Techniques for IBM Power Systems Processors, including IBM POWER8

This IBM Redbooks publication focuses on gathering the correct technical information, and laying out simple guidance for optimizing code performance on IBM POWER8 systems that run the AIX, IBM i, or Linux operating systems.

Last updated: 28 August 2015

IBM XL C/C++ and XL Fortran compilers on Power architectures overview

This paper contains an overview of IBM XL C/C++ and XL Fortran compilers, outlining their history, unique capabilities and cross-platform support. You can also find a performance overview and a summary of their current strategic advantages.

Last updated: 11 December 2015

Code optimization with the IBM XL compilers on Power architectures

This document introduces the most important optimization capabilities and describes the compiler options, source constructs, and techniques that you can use to maximize the performance of your application.

Last updated: 11 December 2015

IBM XL Fortran compilers features

The IBM XL Fortran compilers are full-featured Fortran language compilers available for AIX, Linux on Power, and Blue Gene. This document provides an overview of XL Fortran features and how they can help you with your Fortran development needs.

Last updated: 11 December 2015

Targeting your applications – what little endian and big endian IBM XL Fortran compiler differences mean to you

The IBM POWER8 platform supports operating systems that use big endian or little endian byte ordering. Migrating programs written for a big endian operating system to a little endian operating system may require code changes to maintain program behaviour or results. This article describes the differences, new options, and intrinsic procedures and makes suggestions about code changes to port code to IBM XL Fortran on POWER8.

Last updated: 12 Dec 2014

Version 13.1.2 of IBM XL C for AIX, XL C/C++ for AIX, IBM XL C/C++ for Linux; and Version 15.1.2 of IBM XL Fortran for AIX and XL Fortran for Linux deliver detailed reporting and performance enhancements in addition to improved language interoperability and standards conformance

This announcement letter announces IBM XL Fortran for Linux, V15.1.2.

Last updated: 16 June 2015

Documentation for little endian distributions (online HTML format)

The HTML-based online product documentation for IBM XL Fortran for Linux, V15.1.2, for little endian distributions is viewable in IBM Knowledge Center.

Last updated: 19 June 2015

Documentation for big endian distributions (online HTML format)

For information about big endian distributions, see the HTML-based online product documentation for IBM XL Fortran for Linux, V15.1 in IBM Knowledge Center. Big endian features introduced in this release is covered in Documentation errata for IBM XL Fortran for Linux, V15.1.

Last updated: 06 June 2014

Documentation for little endian distributions (PDF format)

A collection of product documentation files for IBM XL Fortran for Linux, V15.1.2, for little endian distributions, including getting started and installation guides. Cross-reference links to other PDF documents might not work online. In this case, download the related PDF documents to the same directory on your local machine.

Last updated: 19 June 2015

Documentation for big endian distributions (PDF format)

A collection of product documentation files for IBM XL Fortran for Linux, V15.1, for big endian distributions, including getting started and installation guides. Cross-reference links to other PDF documents might not work online. In this case, download the related PDF documents to the same directory on your local machine.

Last updated: 12 Dec 2014

Performance Optimization and Tuning Techniques for IBM Processors, including IBM POWER8

This IBM Redbooks publication focuses on gathering the correct technical information, and laying out simple guidance for optimizing code performance on IBM POWER8 systems that run the AIX, IBM i, or Linux operating systems.

Last updated: 24 November 2014

IBM XL C/C++ and XL Fortran compilers on Power architectures overview

This paper contains an overview of IBM XL C/C++ and XL Fortran compilers, outlining their history, unique capabilities and cross-platform support. You can also find a performance overview and a summary of their current strategic advantages.

Last updated: 19 June 2015

Code optimization with the IBM XL compilers

This document introduces the most important optimization capabilities and describes the compiler options, source constructs, and techniques that you can use to maximize the performance of your application.

Last updated: 19 June 2015

XL Fortran compilers features

The IBM XL Fortran compilers are full-featured Fortran language compilers available for AIX, Linux on Power, and Blue Gene. This document provides an overview of XL Fortran features and how they can help you with your Fortran development needs.

Last updated: 19 June 2015

Targeting your applications – what little endian and big endian IBM XL Fortran compiler differences mean to you

The IBM POWER8 platform supports operating systems that use big endian or little endian byte ordering. Migrating programs written for a big endian operating system to a little endian operating system may require code changes to maintain program behaviour or results. This article describes the differences, new options, and intrinsic procedures and makes suggestions about code changes to port code to IBM XL Fortran on POWER8.

Last updated: 12 Dec 2014

IBM XL Fortran for Linux, V15.1.1 introduces a new compiler for little endian Linux distributions

This announcement letter announces IBM XL Fortran for Linux, V15.1.1.

Last updated: 06 Oct 2014

Documentation for little endian distributions (online HTML format)

The HTML-based online product documentation for IBM XL Fortran for Linux, V15.1.1, for little endian distributions is viewable in IBM Knowledge Center.

Last updated: 12 Dec 2014

Documentation for big endian distributions (online HTML format)

For information about big endian distributions, see the HTML-based online product documentation for IBM XL Fortran for Linux, V15.1 in IBM Knowledge Center. Big endian features introduced in this release is covered in Documentation errata for IBM XL Fortran for Linux, V15.1.

Last updated: 06 June 2014

Documentation for little endian distributions (PDF format)

A collection of product documentation files for IBM XL Fortran for Linux, V15.1.1, for little endian distributions, including getting started and installation guides. Cross-reference links to other PDF documents might not work online. In this case, download the related PDF documents to the same directory on your local machine.

Last updated: 12 Dec 2014

Documentation for big endian distributions (PDF format)

A collection of product documentation files for IBM XL Fortran for Linux, V15.1, for big endian distributions, including getting started and installation guides. Cross-reference links to other PDF documents might not work online. In this case, download the related PDF documents to the same directory on your local machine.

Last updated: 12 Dec 2014

Performance Optimization and Tuning Techniques for IBM Processors, including IBM POWER8

This IBM Redbooks publication focuses on gathering the correct technical information, and laying out simple guidance for optimizing code performance on IBM POWER8 systems that run the AIX, IBM i, or Linux operating systems.

Last updated: 28 Apr 2014

IBM XL C/C++ and XL Fortran compilers on Power architectures overview

This paper contains an overview of IBM XL C/C++ and XL Fortran compilers, outlining their history, unique capabilities and cross-platform support. You can also find a performance overview and a summary of their current strategic advantages.

Last updated: 06 Jun 2014

Code optimization with the IBM XL compilers

This document introduces the most important optimization capabilities and describes the compiler options, source constructs, and techniques that you can use to maximize the performance of your application.

Last updated: 06 Jun 2014

XL Fortran compilers features

The IBM XL Fortran compilers are full-featured Fortran language compilers available for AIX, Linux on Power, and Blue Gene. This document provides an overview of XL Fortran features and how they can help you with your Fortran development needs.

Last updated: 06 Jun 2014

IBM XL Fortran for Linux, V15.1 delivers support for the POWER8 processor

This announcement letter announces IBM XL Fortran for Linux, V15.1.

Last updated: 28 Apr 2014

Online HTML format

The HTML-based online product documentation for IBM XL Fortran for Linux, V15.1 is viewable in IBM Knowledge Center. You can read the information online or download it from the "Offline HTML information center format - download link" section below.

Last updated: 06 June 2014

Offline HTML information center format - download link

To have a local copy of the information center, you can download a package from the following link. The page also contains installation instructions and license files.

Last updated: 06 June 2014

PDF format

A collection of product documentation files for IBM XL Fortran for Linux, V15.1, including getting started and installation guides. Cross-reference links to other PDF documents might not work online. In this case, download the related PDF documents to the same directory on your local machine.

Last updated: 06 June 2014

Documentation errata

This page contains corrections and additions to the product documentation shipped with IBM XL Fortran for Linux, V15.1.

Last updated: See "Modified date" in the page.

Performance Optimization and Tuning Techniques for IBM Processors, including IBM POWER8

This IBM Redbooks publication focuses on gathering the correct technical information, and laying out simple guidance for optimizing code performance on IBM POWER8 systems that run the AIX, IBM i, or Linux operating systems.

Last updated: 28 April 2014

IBM XL C/C++ and XL Fortran compilers on Power architectures overview

This paper contains an overview of IBM XL C/C++ and XL Fortran compilers, outlining their history, unique capabilities and cross-platform support. You can also find a performance overview and a summary of their current strategic advantages.

Last updated: 06 Jun 2014

Code optimization with the IBM XL compilers

This document introduces the most important optimization capabilities and describes the compiler options, source constructs, and techniques that you can use to maximize the performance of your application.

Last updated: 06 Jun 2014

XL Fortran compilers features

The IBM XL Fortran compilers are full-featured Fortran language compilers available for AIX, Linux on Power, and Blue Gene. This document provides an overview of XL Fortran features and how they can help you with your Fortran development needs.

Last updated: 06 Jun 2014