Intel® Fortran Compiler for oneAPI System Requirements, oneAPI 2023 Release

Introduction

This document provides details about hardware, operating system, and software prerequisites for the Intel® Fortran Compilers for oneAPI, i.e. Intel® Fortran Compiler (ifx) and Intel® Fortran Compiler Classic (ifort) . 

In order to gain all functionality and optimal performance with Intel® oneAPI we recommend installing both the Intel® oneAPI Base Toolkit AND the Intel® oneAPI HPC Toolkit. Both toolkits should be downloaded and installed for optimal performance and to obtain all available Intel Performance Libraries. Please refer to the Installation Guide for Intel® oneAPI Toolkits for obtaining and installing both toolkits.

Please see the Intel® Fortran Compiler for oneAPI Release Notes for additional information.

Hardware Requirements

• CPU Processors
  • Intel® Core™ Processor family
  • Intel® Xeon® Processor family
  • Intel® Xeon® Scalable Performance processors
• Accelerators (Intel® Fortran Compiler (ifx) only)
  • Intel® integrated graphics (GEN11) or greater
  • Intel® Data Center GPU Max Series (PVC)
  • Intel® Data Center GPU Flex Series (ATS-M)
  • Intel® Arc™ graphics (dGPU)
  • Intel® Iris® Xe MAX (iGPU)
• 8GB of RAM recommended
• 14GB free disk space for all features

Software Requirements

The Intel® Fortran compiler is included in the Intel® oneAPI HPC Toolkit. It is highly recommended that the Intel® oneAPI Base Toolkit also be installed for complete use of the other software tools.

These OS distributions are tested by Intel or known to work; other distributions may or may not work and are not recommended.  If you have questions and have Commercial Support, create a support ticket. Otherwise use the Intel Community Forums when you need assistance.

Linux* OS

• Red Hat Enterprise Linux* 8.x, 9.x
• Ubuntu 20.04 LTS, 22.04
• Fedora* 37, 38
• SuSE LINUX Enterprise Server* 15 SP3, SP4
• Debian* 9.0, 10.0, 11
• Amazon Linux 2, 2022
• Rocky Linux 8, 9
• WSL 2
• For OpenMP TARGET using Intel accelerators (GPU) Intel® Fortran Compiler (ifx) only
  • Intel® Data Center GPU Max Series (PVC)
    • Red Hat Enterprise Linux* 8.6
    • SuSE LINUX Enterprise Server* 15 SP4
    • Ubuntu 22.04
  • Intel® Data Center GPU Flex Series (ATS-M)
    • Red Hat Enterprise Linux* 8.6
    • Ubuntu 22.04
  • Intel® Arc™ graphics (dGPU)
    • Ubuntu 22.04
  • Intel® Iris® Xe graphics (iGPU)
    • Ubuntu 20.04. 22.04
  • Level 0 and OpenCL  graphics drivers required to be installed

    • To install the Linux General Purpose Intel GPUs (GPGPU) Driver, see this article and follow the installation directions for your device.

• Linux Developer tools component installed, including gcc, g++ and related tools.

Known Issues

• If you installed Intel compilers as part of the oneAPI 2023.2 release of the Intel® oneAPI Base Toolkit, the Intel® oneAPI HPC Toolkit, the Intel® oneAPI IoT Toolkit, or from the oneAPI Standalone Component page, please install the appropriate patch for your environment. 

  Two patches are now available, one for each of the Intel C++ and Fortran compilers, that were published as part of oneAPI 2023.2:

  * Intel® oneAPI DPC+/C+ Compiler and Intel® C++ Compiler Classic
  * Intel® Fortran Compiler Classic and Intel® Fortran Compiler

  The patch version is 2023.2.1.

  These patches apply only to Linux* and Windows*.

  These patches resolve the issue of missing Environment Modules utility modulefiles and other issues.

  The patches are available on the Intel® Registration Center, other distribution channels, like APT, YUM, and the standalone component page.

• The environment start up scripts have been migrated to POSIX compliant scripts. For non-POSIX shells, such as csh, there is a workaround for command-line usage:
  % bash -c 'source /opt/intel/oneapi/setvars.sh ; exec csh'

Windows*

• Microsoft* Windows* Pro and Enterprise 10
• Microsoft* Windows* Pro and Enterprise 11
• Microsoft* Windows* Server 2019
• Microsoft* Windows* Server 2022
• For OpenMP TARGET (ifx only) using Intel accelerators (GPU)
  • Intel® Data Center GPU Flex Series (ATS-M)
    • Microsoft* Windows* Pro and Enterprise 10 x64
    • Microsoft* Windows* Pro and Enterprise 11 x64
    • Microsoft* Windows* Server 2019
    • Microsoft* Windows* Server 2022
  • Intel® Arc™ graphics (dGPU)
    • Microsoft* Windows* Pro and Enterprise 10 x64
    • Microsoft* Windows* Pro and Enterprise 11 x64
  • Intel® Iris® Xe graphics (iGPU)
    • Microsoft* Windows* Pro and Enterprise 10 x64
    • Microsoft* Windows* Pro and Enterprise 11 x64
  • Level 0 and OpenCL graphics drivers are required
    • To install the driver follow the directions in the article appropriate for your device
      • Intel® Iris® Xe MAX (DG1) and 11th-13th Gen Intel® Core™ Processor Graphics directions
      • Intel® Data Center GPU Flex Series (ATS-M). Contact your OEM representative for access to the Intel Registration Center.

To successfully use the Intel Fortran compiler on Windows, Microsoft Visual Studio must be installed. More information here.

KNOWN ISSUEs

Intel® oneAPI Toolkits 2022.1.3 and earlier and Intel® Parallel Studio XE (any version) do not support Microsoft Visual Studio 2022. On systems with Microsoft Visual Studio 2022 installed, Intel® oneAPI and Intel® Parallel Studio XE installers may fail during installation, upgrade, modification, or uninstallation. Refer to this article for more information.

macOS*

macOS Versions Supported ^#

• macOS 12.0 Monterey
• macOS 13.0 Ventura

^# Note: macOS* support for Mac* computers with Intel® Processors

Fortran Integration into Xcode Removed

Xcode integration capabilities within our Fortran Compiler bundle have been removed. Command line interface remains fully functional for macOS.

Keep in mind that installation of Xcode is still recommended, as command line tools from Xcode are required by the command line compiler. However, you can install just the Xcode Command Line Tools with this command from a terminal window:

xcode-select --install

Xcode for Command Line

• Xcode 11 is available for command line tools use only. Fortran Integration into Xcode removed.
• Xcode 12 and Xcode 13 available for command line tools use only.
  • Fortran Integration into Xcode removed.
  • When linking with Xcode 12.0, Xcode 12.1 or Xcode 12.2 some libraries are not found.
    • Workaround

Install Xcode, then run:

sudo xcode-select -s /Applications/Xcode.app/Contents/Developer

Then accept the license (only if you haven't yet) by:

sudo xcodebuild -license

Other macOS Information

• In order to gain all functionality and optimal performance with Intel® oneAPI for macOS* we recommend installing both the Intel® oneAPI Base Toolkit AND the Intel® oneAPI HPC Toolkit. Both toolkits should be downloaded and installed for optimal performance and to obtain all available Intel Performance Libraries. Please refer to the Installation Guide for Intel® oneAPI Toolkits for obtaining and installing both toolkits.
• There is no OpenMP TARGET support with macOS, i.e. ifx is not available with macOS.

Known Issues

• The environment start up scripts have been migrated to POSIX compliant scripts. For non-POSIX shells, such as zsh, there is a workaround for command-line usage:
  % bash -c 'source /opt/intel/oneapi/setvars.sh ; exec zsh'

Notes

• The Intel® compilers are tested with a number of different Linux distributions, with different versions of gcc. The version of glibc you use must be consistent with the version of gcc in use. 
• Compiling very large source files (several thousands of lines) using advanced optimizations such as -O3, -ipo and -qopenmp, may require substantially larger amounts of RAM.
• Some optimization options have restrictions regarding the processor type on which the application is run. Please see the documentation of these options for more information.

Deprecation Notice

macOS Support

macOS support is deprecated for Intel® Fortran Compiler Classic (ifort) in the oneAPI 2023.1 release. macOS support for Intel® Fortran Compiler Classic (ifort) will not be available starting with the oneAPI 2024.0 release.

Intel oneAPI Base Toolkit for macOS on x86 is now deprecated and will be discontinued in the 2024.0 release.  Several Intel-led open source developer tool projects will continue supporting macOS on Apple Silicon including oneAPI Threading Building Blocks (oneTBB) and Intel® Implicit SPMD Program Compiler and we welcome the opportunity to work with contributors to expand support to additional tools in the future.

Intel oneAPI HPC Toolkit for macOS on x86 is now deprecated and will be discontinued in the 2024.0 release.  Several Intel-led open source developer tool projects will continue supporting macOS on Apple Silicon including oneAPI Threading Building Blocks (oneTBB) and Intel® Implicit SPMD Program Compiler and we welcome the opportunity to work with contributors to expand support to additional tools in the future.

Integrated Graphics Processors

As announced previously, Windows driver support of integrated graphics processors included with 6th - 10th Gen Intel Core Processor and related Intel Atom®, Pentium®, and Celeron® processors is deprecated and has moved to maintenance mode. Only security and critical bug fixes will be updated.

oneAPI tools using existing integrated graphics processor functionality in the aforementioned processors may continue to work, but will no longer be supported. Note that CPU functionality for these processors remains fully supported and unaffected.

Operating Systems

This operating system was deprecated in release, Intel oneAPI 2023.2, and will be removed in a future release:

• SLES 15 SP3

This operating system was deprecated in release, Intel oneAPI 2023.1, and will be removed in a future release:

• Fedora 36

These operating systems are deprecated in release, Intel oneAPI 2023.0, and will be removed in a future release:

• Rocky 8
• Debian 9, 10
• Amazon 2
• macOS* 12

Removal Notice

Support for this operating systems is removed in release, Intel oneAPI 2023.2.

• Fedora 36

Support for these operating systems is removed in release, Intel oneAPI 2023.0.

• Windows Server 2016*
• Red Hat* Enterprise Linux 7
• SUSE Linux Enterprise Server* 15 SP2
• Ubuntu* 18.04 LTS
• CentOS* 7
• Fedora 34
• Fedora 35
• macOS* 11

Intel® oneAPI tools support for integrated graphics processors is available on 11th Generation and newer Intel® Core™ Processors. Active support for older integrated graphics processors included with 6th through 10th Generation Intel Core Processors and related Intel Atom®, Pentium®, and Celeron® processors are wsno longer be available starting with the Intel oneAPI 2023.1 release.

• Note that CPU functionality for these processors remains fully supported and unaffected.

Development Environment

Diagnostics Utility for Intel® oneAPI Toolkits

The top-level sys_check script has been removed from Intel oneAPI toolkits in a favor of using the more advanced Diagnostic Utility for Intel® oneAPI Toolkits to run system checks on oneAPI products . To learn more, see the Diagnostics Utility for Intel® oneAPI Toolkits User Guide.

• Known issues and limitations
  • The Diagnostics Utility only supports running checkers in .sh and .bat format.
  • If the oneAPI installer cache was removed, the oneAPI products detection check will not find the product version.

Visual Studio Code (VS Code) Extensions for Intel® oneAPI Toolkits

The VS Code extensions for oneAPI Toolkits provide assistance to developers who are creating, debugging and profiling oneAPI applications. The Using Visual Studio Code with Intel® oneAPI Toolkits User Guide provides additional detail.

The following VS Code extensions are available in the VS Code Marketplace:

These VS Code extensions are available for CPU and GPU commands.

• Sample Browser for Intel® oneAPI Toolkits
• Environment Configurator for Intel® oneAPI Toolkits
• Analysis Configurator for Intel® oneAPI Toolkits
• GDB GPU Support for Intel® oneAPI Toolkits
• DevCloud Connector for Intel® oneAPI Toolkits

See also:

• Get Started with Intel® oneAPI HPC Toolkit for Linux
• Get Started with Intel® oneAPI HPC Toolkit for Windows
• Get Started with Intel® oneAPI Base and HPC Toolkit for MacOS*

Microsoft Visual Studio* on Windows

• To use the Microsoft Visual Studio* development environment or command-line tools to build IA-32 or Intel® 64 architecture applications these versions are supported:
  • Microsoft Visual Studio* 2022 Community, Enterprise and Professional Editions with 'Desktop development with C++' component installed, except for use with Intel® Inspector and Intel® Advisor
  • Microsoft Visual Studio* 2019 Community, Enterprise and Professional Editions with 'Desktop development with C++' component installed
  • For addtional details see the article, Intel Compilers Compatibility with Microsoft Visual Studio and Xcode.
  • Tips on installing and integrating
• To use command-line tools only to build Intel® 64 architecture applications these versions are supported:
  • Visual Studio Build Tools* 2022
  • Visual Studio Build Tools* 2019

KNOWN ISSUE

Microsoft Visual Studio 2022, the 17.2 update, breaks the Intel Fortran Integrations into Visual Studio. For up-to-date information, see this article.

DEPRECATION NOTICE

Intel Compiler Integrations for Microsoft Visual Studio* 2017 is deprecated and will be removed in a future release. Support for Integrations for Visual Studio is limited to two supported major versions of Visual Studio: the current publicly available and supported major version and the previous major version from Microsoft.

Microsoft Windows Subsystem for Linux

Using Microsoft’s Windows Subsystem for Linux 2 (WSL2) in Windows 10 and Windows 11, you can install the native Linux distribution of Intel oneAPI toolkits and libraries on Windows for CPU and GPU workflows. Details here.

Intel Fortran Compiler System Requirements for Previous oneAPI Releases

• one API 2022
• one API 2021

Notices and Disclaimers

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