Intel® Fortran Compiler Release Notes and New Features

Published: 04/25/2020  

Last Updated: 03/20/2023

The page provides links to the Intel® Fortran Compiler Classic and Intel® Fortran Compiler available in the Intel® oneAPI HPC Toolkit. This page also provides the Release Notes for the older Intel® Fortran Compiler available with Intel® Parallel Studio XE. The Intel® C++ Compiler Classic Release Notes for Intel® Parallel Studio XE and for oneAPI are available on a separate page. The Intel® oneAPI DPC++/C++ Compiler Release Notes are here. The notes are categorized by major version, from newest to oldest, with individual releases listed within each major version.

Click a version to expand it into a summary of new features and changes in that version since the last release and access the download buttons for the detailed release notes, which include important information, such as pre-requisites, software compatibility, installation instructions, and known issues.

All files are in PDF format - Adobe Reader* (or compatible) required.
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For questions or technical support, visit Intel® Software Developer Support.

oneAPI 2023

These compilers are available in the Intel® oneAPI HPC Toolkit 2023.1.

Overview

ifx version 2023.1.0

  • ifx is now fully compliant with Fortran 2018, and it has feature parity with ifort.
  • New OpenMP 5.1 Features
    • Iterators are now supported in the DEPEND clause. 
      • Optional END construct directives are now supported with strictly structured block construct bodies. 
    • ASSUMES directive 
      • Provides hints to the optimizer about the current compilation unit and all the code it can reach through procedure calls.
    • ERROR directive 
      • Causes the compiler or runtime system to process an error condition.
    • NOTHING directive 
      • Provides documentary clarity in conditionally compiled code or conditional OpenMP code. It has no effect on the semantics or execution of the program. 
    • New clauses LINK and INDIRECT for directive DECLARE TARGET 
      • The LINK clause maps the list items for specific device executions, supporting functions called in a TARGET region that refer to the list items. The INDIRECT clause determines whether procedures specified in an ENTER clause can be called by an indirect device invocation.

ifort version 2021.9.0

  • The Intel® Fortran Compiler Classic has been updated to include recent versions of 3rd party components, which include functional and security updates. Also, bug fixes for the Fortran Language.

oneAPI 2022

These compilers are available in the Intel® oneAPI HPC Toolkit 2022.2.

Overview

ifort version 2021.6.0

  • Fortran language fixes and security updates

ifx version 2022.1.0

  • All of Fortran 2003 Standard is implemented including parameterized derived types
  • All of Fortran 2008 Standard is implemented with the exception of coarrays
  • Corrections to reported problems

Complete Release Notes

These compilers are available in the Intel® oneAPI HPC Toolkit 2022.1.

Overview

ifort version 2021.5.0

  • Fortran language fixes and security updates

ifx version 2022.0.0

  • All of Fortran 2003 Standard is implemented with the exception of parameterized derived types
  • All of Fortran 2008 Standard is implemented with the exception of coarrays
  • Corrections to reported problems

Complete Release Notes

oneAPI 2021

19.1 (PSXE 2020)

Release Notes:
Windows* (EN) Linux* (EN) macOS* (EN)

Overview

  • There are no new features in this update.
  • Corrections to reported problems.

Release Notes:
Windows* (EN) Linux* (EN) macOS* (EN)

Overview

  • Intel® Parallel Studio XE 2020 Composer Edition for Fortran and C++ Linux* contains an update to the Intel® C++ Compiler next generation code generator. This is invoked using the -qnextgen option to the ICC and ICPC compilers. This update to the Intel® C++ Compiler next generation code generator includes our latest updates and features for our C++ next generation compiler invoked with the -qnextgen option.
  • There are no new features, bug fixes, or security enhancements for the Intel® Fortran Compiler or the Intel® C++ Compiler without the -qnextgen option.
  • This is a Linux only release.

Release Notes:
Windows* (EN) Linux* (EN) macOS* (EN)

Overview

  • Corrections to reported problems

Release Notes:
Windows* (EN) Linux* (EN) macOS*


Windows* (JP) Linux* (JP)

Overview

  • New compiler options
  • New features from OpenMP* 5.0
  • New features from Fortran 2018
  • Corrections to reported problems

Windows* Highlights

  • Microsoft Windows Server* 2019 support added
  • Microsoft Visual Studio* 2019 support

Linux* Highlights

  • Fedora* 30 support added
  • Red Hat* Enterprise Linux* 8 support added
  • Ubuntu* 19.04 support added
  • CentOS* 8 support added
  • Debian* 10.0 support added

macOS* Highlights

  • macOS* 10.15 support added

19.0

Release Notes:
Windows* (EN) Linux* (EN) macOS*

Overview

  • THIS IS A LINUX ONLY RELEASE.
  • Intel® Parallel Studio XE 2019 update 7 Composer Edition contains compiler update 9.
  • 2019 Update 7 provides a fix to the Intel® C++ Compiler related to the _mm_prefetch intrinsic. There was a problem in specific forms of SIMD loops with _mm_prefetch that under certain gather/scatter operations could cause a crash.  If you do not use the _mm_prefetch intrinsic then you will not see this potential crash.  

  • There were a few security related enhancements to the license checking software used by the C++ and Fortran compilers.

  • The compiler version will appear in the version string as version 19.0.9 in this PSXE 2019 Update 7.  This is due to compiler updates released outside of Parallel Studio packages that used compiler versions 19.0.7 and 19.0.8.  For details on compiler versions included in Parallel Studio releases please visit Intel Compiler and Composer Update Version Numbers to Compiler Version Number Mapping.

​

Release Notes:
Windows* (EN) Linux* (EN) macOS*

Overview

  • Intel® Parallel Studio XE 2019 update 6 Composer Edition contains compiler update 8.
  • Compilers update 6 and 7 are not available to the general public.
  • Compilers update 6 and 7 were special releases not available to all customers.
  • Corrections to reported problems.
  • Includes certain functional and security updates. We recommend updating for these functional and security updates.

​

Release Notes:
Windows* (EN) Linux* (EN) macOS*


Windows* (JP) Linux* (JP)

Overview

  • Intel® Software License Manager upgrade to version 2.9 required for floating licenses
  • 32-bit support for coarrays deprecated, will be removed after 19.0
  • Corrections to reported problems.

Windows* Highlights

  • Microsoft Visual Studio* 2019 support

Release Notes:
Windows* (EN) Linux* (EN)

Overview

  • Was released for Windows* and Linux*, no macOS* release (see "update 4 Eng/Jpn" above for macOS* support)
  • Use the newer "update 4 Eng/Jpn" final update 4 release
  • Intel® Software License Manager upgrade to version 2.9 required for floating licenses
  • 32-bit support for coarrays deprecated, will be removed after 19.0
  • Corrections to reported problems.

Windows* Highlights

  • Microsoft Visual Studio* 2019 support

Release Notes:
Windows* Linux* macOS*

Overview

  • Previous compiler versions erroneously permitted a PRIVATE or SEQUENCE statement to appear prior to the declaration of any type parameters in a derive type declaration. Intel® Fortran Compiler 19.0 update 3 no longer permits this behavior.
  • Corrections to reported problems.

Windows* Highlights

  • Microsoft Visual Studio* Shell is removed

OS X* Highlights

  • Xcode* 10.1 support

Release Notes:
Windows* Linux* macOS*

Overview

  • Intel® Fortran Compiler 19.0 update 2 includes functional and security updates. Users should update to the latest version.

Release Notes:
Windows* (EN) Linux* (EN) macOS*


Windows* (JP) Linux* (JP)

Overview

  • New code names supported by -[a]x, -tune and -arch options
  • Value safe simd options for !$OMP SIMD directive
  • Corrections to reported problems

Windows* Highlights

  • Microsoft Visual Studio* 2017 update 8 (15.8) support

OS X* Highlights

  • macOS* 10.14 and Xcode* 10 support

Release Notes:
Windows* Linux* macOS*

Overview

  • -qopenmp-simd is on by default
  • New -check shape and -warn shape options
  • New vectorlength and dynamic_align/nodynamic_align clauses for vector directive
  • User-Defined Reduction support
  • New -fcf-protection option
  • New -[a]xcannonlake and -mtune=cannonlake options
  • -m support
  • -rcd option deprecated
  • Changes to mitigate speculative execution side-channel issues and new -mindirect-branch option
  • New and changed compiler options
  • New Fortran 2018 features support
  • Corrections to reported problems

Windows* Highlights

  • Restored context sensitive help in VS
  • Improvements in Fortran Editor

Linux* Highlights

  • Fedora* 27, 28 support added
  • Ubuntu* 18.04 LTS, 17.10 support added
  • SUSE Linux Enterprise Server* 12 (SP3), 15 support added
  • CentOS 7.1, 7.2 support added

OS X* Highlights

  • Xcode* 9.4 support

18.0

Release Notes:
Windows* Linux* macOS*

Overview

  • Intel® Parallel Studio XE 2018 update 5 Composer Edition has been updated to include more recent versions of 3rd party components, which include functional and security updates. Users should update to the latest version.

Release Notes:
Windows* Linux* macOS*

Overview

  • Corrections to reported problems

Release Notes:
Windows* Linux* macOS*

Overview

Windows* Highlights

  • Restored context sensitive help in VS
  • Microsoft Visual Studio* 2017 update 6 (15.6) support

Linux* Highlights

  • __INTEL_LIBIRC_DEBUG environment variable

OS X* Highlights

  • Xcode* 9.3 support

Release Notes:
Windows* (EN) Linux* (EN) macOS*


Windows* (JP) Linux* (JP)

Overview

Windows* Highlights

  • Microsoft Visual Studio* 2017 update 5 support

OS X* Highlights

  • Xcode* 9.2 support

Release Notes:
Windows* (EN) Linux* (EN) macOS*


Windows* (JP) Linux* (JP)

Overview

  • First update with Japanese localization
  • Corrections to reported problems

Windows* Highlights

  • Microsoft Visual Studio* 2017 update 3 (15.3) support
  • More stable integration with Microsoft Visual Studio* 2017

OS X* Highlights

  • Xcode* 9.1 and macOS* 10.13 support

Release Notes:
Windows* (EN) Linux* (EN) macOS*


Windows* (JP) Linux* (JP)

Overview

  • New -assume contiguous_pointer and -assume contiguous_assumed_shape options
  • New -qopt-zmm-usage option
  • Diagnose non-contiguous pointer assignment to CONTIGUOUS pointer with -check contiguous
  • Control-flow Enforcement Technology (CET) support
  • New option -fimf-use-svml to force the usage of SVML
  • Compile time dispatching for SVML calls
  • Change in treatment of -openmp option
  • Enhanced -init=[keyword] initialization choices
  • All -o* options replaced with -qo* options
  • Profile guided optimization hardware-based event sampling
  • MEMKIND high bandwidth memory directive
  • Offline documentation removed from the Installed Image
  • New features from Fortran 2008 are supported
  • Support for the Intel® Xeon Phi™ x100 product family coprocessor is removed
  • New monotonic, overlap and lastprivate keywords for OpenMP* SIMD directive
  • Task reduction support from OpenMP* technical report 4 : version 5.0 preview 1

Windows* Highlights

  • Microsoft Visual Studio* 2015 Shell and Libraries added
  • Microsoft Visual Studio* 2017 support added
  • Microsoft Windows Server* 2016 support added
  • Support for Microsoft Visual Studio* 2012 has been dropped
  • Context-Sensitive help (F1) and help menu items link to online documentation

Linux* Highlights

  • Red Hat* Enterprise Linux* 5 is not supported

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.