IBM Support

XL Fortran Runtime for AIX Fix Pack 24 (September 2016 PTF) for 13.1



IBM XL Fortran Runtime for AIX has been made generally available and contains fixes to version 13.1, including all predecessor PTF content (PTF is equivalent to Fix Pack)

Download Description

If you wish to run an application developed using the IBM XL Fortran for AIX, 13.1 compiler, but do not have the corresponding version of compiler or runtime already installed, then you need to install the Runtime Environment package.

Table of Contents
Sections Description

The Change history section provides an overview on what is new in this release with a description of any new functions or enhancements when applicable.

The How critical is this fix section provides information related to the impact of this release to allow you to assess how your environment may be affected.

The Prerequisites section provides important information to review prior to the installation of this release.

The Download package section provides the direct link to obtain the download package for installation in your environment.

The Installation instructions section provides the installation instructions necessary to apply this release into your environment.

The Known side effects section contains a link to the known problems (open defects) identified at the time of this release.

Supporting Documentation
Document Description

Click to review the detailed system requirements information for a complete list of hardware requirements, supported operating systems, prerequisites and optional supported software, with component-level details and operating system restrictions.

IBM Knowledge Center provides an entry point to product documentation. You can view, browse, and search online information related to the product.

You can also visit the XL Fortran for AIX library to review additional documentation.

Click to review a complete list of the defects (APARs) resolved in this release including a list of resolved defects for the entire version family.

Click to review a list of technotes describing technical issues, changes to the existing behavior, as well as documentation corrections for this product.

XL Fortran Developer forums and blog.


Prerequisites include:

Operating system:

  • IBM AIX V5.3 TL 5300-07, or later
  • IBM AIX V6.1
  • IBM AIX V7.1
  • IBM PASE for i 6.1 with PTF SI30636, or later
  • IBM PASE for i 7.1

Disk space:

  • 25 MB

Installation Instructions

Review the installation instructions.

Terms and Conditions: By downloading, installing, copying, accessing or using this software you agree to the terms and conditions outlined in the License Agreement. Please review the License Agreement and License Information documents prior to proceeding with download or installation.

Installation instructions

You can install this software using the System Management and Installation Tool (SMIT) utility.

You must log on as root or have the superuser authority.

To install this software using the SMIT interface, follow these steps:

  1. Download the desired package.

  2. Uncompress and untar each package into a separate empty directory, using the following command:

    zcat .tar.Z | tar -xf -

  3. Run the following command:

    smit install_latest

    This command invokes SMIT, which presents a menu-driven user interface for the installation process.
    First specify the INPUT device/directory of the software by typing in the name of the directory that contains the extracted package.

  4. If you have read the license agreement and agree to its terms, you must select yes next to Accept new LICENSE agreements? to continue with the installation.

  5. The default values can be modified according to your preferences.


  • You must install the Runtime environment package before installing the Utilities package, if you install both packages.
  • To ensure that all necessary filesets are installed, keep the default setting of SOFTWARE to install as _all_latest; otherwise, you have to specify the filesets individually.
  • You can preview the installation process without installing the software by selecting yes next to the Preview only? field.
  • Press Enter when you are done customizing the options to start the installation process.
    Installation starts and messages are displayed as each part is installed. The installation log is stored to the $HOME/smit.log file.
  • If you select _all_latest, SMIT will attempt to install all runtime filesets. As a result, you might see the failed installation status for some message catalog filesets because of missing prerequisites. Ignore those errors if you do not need the runtime message catalog(s) for the national language(s).

Download Package

Package xlf.rte. contains the following fileset content:


How critical is this fix?

Impact Assessment
Impact Description

This is a maintenance release. It contains fixes for client-reported and internally found defects.

Test Results


Regression: An error in the Maintenance Delivery Vehicle (MDV) that produces incorrect or unexpected behavior causing a supported feature to stop functioning as designed.
This includes:

  • Coding errors that cause a regression
  • Documentation or packaging problems that cause a regression
  • Errors reported in a new function delivered in a MDV that cause a regression

Incomplete: An error in the MDV has not regressed, but does not work as designed.
This includes:

  • Fixed APARs which did not solve the original problem but did not break anything new
  • APARs reporting documentation errors, such as readme errors, that cause problems applying an MDV but do not lead to a regression

  • Regression and incomplete APARs are considered fix-in-error or MDV-in-error
  • Definitions above apply only to valid APARs that result in product fixes (APARs returned as working-as-designed are not assessed for being fix-in-error)
  • Issues in major releases due to new functionality do not apply in this definition

There are no known regressions to report.

Problems Solved

Defects resolved

Click the Fix List link in the table of contents above to review a list of the problems solved in this release.

Known Side Effects

Review the following list of known issues and open defects:

There are no known issues report.

Open defects

Review the following list of open defects for IBM XL Fortran for AIX on the IBM Support Portal.

Review technote 1461170: Open APARs for IBM products available on the Web for information on how to configure your MyNotifications subscription account and subscribe to the APARs you are interested in following.

Change History

What's new

No new features or functions.

Click the link in the Download Options column:

[{"DNLabel":"xlf.rte.","DNDate":"27 Sep 2016","DNLang":"English","DNSize":"50932129","DNPlat":{"label":"AIX","code":"PF002"},"DNURL":"","DNURL_FTP":" ","DDURL":null}]

Technical Support

The IBM XL Fortran for AIX Runtime environment is not supported as a stand-alone software product.

If you suspect a problem with the IBM XL Fortran Runtime environment component while using it with a third-party application, contact your application provider for support.

Full support (installation, defect support and general questions) for the IBM XL Fortran Runtime environment component is available with the software subscription and support agreement for the XL Fortran Compilers.

A suitable test case is required for defect support; review technote 1260804: Test case preparation for IBM XL compilers support for details.

[{"Product":{"code":"SSGH4D","label":"XL Fortran for AIX"},"Business Unit":{"code":"BU011","label":"Systems - zSystems"},"Component":"Runtime","Platform":[{"code":"PF002","label":"AIX"}],"Version":"13.1","Edition":""}]

Problems (APARS) fixed

Document Information

Modified date:
08 August 2018