Intel® Fortran Compilers

Performance without compromise on Windows*, Linux* and OS X*

  • Broad support for current and previous Fortran standards, plus popular extensions
  • Intel® Math Kernel Library included in suites
  • Optional Rogue Wave* IMSL* Fortran Numerical Library on Windows

Try & Buy Intel® Fortran Compiler in:

Intel® Parallel Studio XE

A complete Fortran development environment for Windows*

  • Works with Microsoft* Visual Studio* 2010, 2012 and 2013
  • Don't have Visual Studio? No problem - a Fortran development environment based on Microsoft Visual Studio 2010 Shell is included - nothing else to buy!
  • Develop, build, debug and run from the familiar Visual Studio IDE, or build and run from the command line - your choice!
  • 32-bit and 64-bit development included - no extra charge!
  • Create traditional console applications or advanced graphical interfaces with QuickWin, OpenGL* and Windows API support
  • COM (Component Object Model) and .NET interoperability provided
  • Build mixed-language applications with C++, Visual Basic*, Microsoft C# and more! (requires Microsoft Visual Studio)
  • Tens of thousands of declarations of routines, types and constants for Windows API, OpenGL, POSIX, dialogs, multi-byte character support and more!

Intel Fortran integration into Microsoft Visual Studio

  1. Fortran project and source files in Visual Studio
  2. Fortran-aware text editor with context-sensitive help, Go To Definition, templates, coloring and more
  3. Debug Fortran code with full access to Fortran types and arrays
  4. Build and debug mixed-language programs in a single Visual Studio solution
  5. Set breakpoints at Fortran source lines, with optional conditions


Broad support for current and previous Fortran standards, plus popular extensions

  • Full language Fortran 95, full Fortran 2003, plus significant Fortran 2008 features
    • Coarrays
    • DO CONCURRENT
    • 31 array dimensions (standard specifies 15)
    • NEWUNIT in OPEN
    • Much more - see release notes for details
  • Also supports FORTRAN IV (FORTRAN-66), FORTRAN 77 and Fortran 90
  • Extensive OpenMP 4.0* support
  • Source compatible with Compaq Visual Fortran* - most projects just need a rebuild

Performance without compromise

  • Industry leading performance on Intel and AMD* processors.  Take a look at the benchmarks below that were run by Polyhedron* for independent confirmation.


Geomean time in seconds - lower is better
As published 3/10/2014 at http://www.polyhedron.com

  • Extensive optimizations for the latest Intel processors, including Intel® Xeon Phi™ coprocessor
  • Take advantage of multicore, manycore and multiprocessor systems with OpenMP, automatic parallelism, DO CONCURRENT, coarrays and Intel Xeon Phi coprocessor support
  • Patented automatic CPU dispatch feature gets you code optimized for the current running processor

Intel® Math Kernel Library

  • Included in Fortran suites that adds advanced math processing
  • Vectorized and threaded for highest performance on all Intel and compatible processors
  • De facto standard APIs for simple code integration
  • Compatible with all C, C++ and Fortran compilers
  • Royalty-free, per developer licensing for low cost deployment
  • Click here for more information.

Rogue Wave* IMSL* 7 Fortran Numerical Library

  • Optional add-on to the suites that include Intel Visual Fortran compiler
  • Superior accuracy and reliability through 40 years of refinement
  • A comprehensive set of 1000+ algorithms
  • Supporting parallel processing architectures since 1990
  • Evolves easily with software and hardware upgrades
  • Click here for more information and pricing

Outstanding support

  • One year of support included with purchase – gives you access to all product updates and new versions released in the support period plus access to Intel® Premier Support
  • Active user forums for help from experienced users and Intel engineers

Works with your familiar development environment

  • Uses gcc tools, including gdb debugger
  • Link compatible with C and C++ from gcc
  • 32-bit and 64-bit compilers included – no extra charge!

Broad support for current and previous Fortran standards, plus popular extensions

  • Full language Fortran 95, Full Fortran 2003, plus significant Fortran 2008 features
    • Coarrays
    • DO CONCURRENT
    • 31 array dimensions (standard specifies 15)
    • NEWUNIT in OPEN
    • BLOCK
    • Much more - see release notes for details
  • Also supports FORTRAN IV (FORTRAN-66), FORTRAN 77 and Fortran 90
  • Extensive OpenMP 4.0* support

Performance without compromise

  • Industry leading performance on Intel and AMD processors. Take a look at the benchmarks below that were run by Polyhedron for independent confirmation.


Geomean time in seconds - lower is better
As published 3/10/2014 at http://www.polyhedron.com

  • Extensive optimizations for the latest Intel processors including Intel® Xeon Phi™ coprocessor
  • Take advantage of multicore, manycore and multiprocessor systems with OpenMP, automatic parallelism, DO CONCURRENT, coarrays and Intel Xeon Phi coprocessor support
  • Patented automatic CPU dispatch feature gets you code optimized for the current running processor

Intel® Math Kernel Library

  • Included in Fortran suites that adds advanced math processing
  • Vectorized and threaded for highest performance on all Intel and compatible processors
  • De facto standard APIs for simple code integration
  • Compatible with all C, C++ and Fortran compilers
  • Royalty-free, per developer licensing for low cost deployment
  • Click here for more information

Outstanding support

  • One year of support included with purchase – gives you access to all product updates and new versions released in the support period plus access to Intel® Premier Support
  • Active user forums for help from experienced users and Intel engineers

Works with your familiar development environment

  • Build from command line or use Xcode integration (limited feature)
  • Link compatible with C and C++ from gcc
  • 32-bit and 64-bit compilers included – no extra charge!

Broad support for current and previous Fortran standards, plus popular extensions

  • Full language Fortran 95, full Fortran 2003, plus significant Fortran 2008 features
    • DO CONCURRENT
    • 31 array dimensions (standard specifies 15)
    • NEWUNIT in OPEN
    • BLOCK
    • Much more - see release notes for details
  • Also supports FORTRAN IV (FORTRAN-66), FORTRAN 77 and Fortran 90
  • Extensive OpenMP 4.0* support

Performance without compromise

  • Industry leading performance
  • Extensive optimizations for the latest Intel processors
  • Take advantage of multicore, manycore and multiprocessor systems with OpenMP, automatic parallelism, DO CONCURRENT
  • Patented automatic CPU dispatch feature gets you code optimized for the current running processor

Intel® Math Kernel Library

  • Vectorized and threaded for highest performance on all Intel and compatible processors
  • De facto standard APIs for simple code integration
  • Compatible with all C, C++ and Fortran compilers
  • Royalty-free, per developer licensing for low cost deployment
  • Included in Intel® Fortran Composer XE
  • Click here for more information

Outstanding support

  • One year of support included with purchase – gives you access to all product updates and new versions released in the support period plus access to Intel® Premier Support
  • Active user forums for help from experienced users and Intel engineers

Videos to help you get started.

  • Introduction to Intel® Visual Fortran in the Microsoft* Visual Studio* Development Environment
  • Optimizing your application with Intel® C++ and Fortran Compilers for Windows* and Linux*

Register for future Webinars


Previously recorded Webinars:

  • Update Now: What’s New in Intel® Compilers and Libraries
  • An Introduction to Intel® Visual Fortran Development on Intel® Xeon Phi™ coprocessor
  • OpenMP 4.0 for SIMD and Affinity Features with Intel® Xeon® Processors and Intel® Xeon Phi™ Coprocessor
  • Learn to be an Intel® Visual Fortran Power User
  • Optimizing and Compilation for Intel® Xeon Phi™ Coprocessor

More Tech Articles

What are PEEL and REMAINDER loops? (Fortran and C vectorization support)
Par Martyn Corden (Intel)Publié le 10/28/20140
The vectorization component of the optimization report produced by the Intel® Compiler version 15 may contain remarks such as: <Peeled> remark #15301: PEEL LOOP WAS VECTORIZED <Remainder> remark #15301: REMAINDER LOOP WAS VECTORIZED The compiler does its best to create an effi...
Diagnostic 15319: Using NOVECTOR directive
Par Devorah H. (Intel)Publié le 10/02/20140
Product Version: Intel(R) Visual Fortran Compiler XE 15.0.0.070  Cause: When using NOVECTOR directive in code, the vectorization report generated using Visual Fortran Compiler's optimization and vectorization report options ( -O2 -Qopt-report:2) includes non-vectorized loop instance.  Example:...
Diagnostic 15304: non-vectorizable loop instance
Par Devorah H. (Intel)Publié le 10/02/20140
Product Version: Intel(R) Visual Fortran Compiler XE 15.0.0.070   Cause: The vectorization report generated using Visual Fortran Compiler's optimization and vectorization report options (-Qvec-report2 -O2) includes non-vectorized loop instance when using the following compiler option (Win OS): ...
Mapping of Intel® MPI Library versions to bundle suites
Par Gergana Slavova (Intel)Publié le 08/28/20140
Introduction: Mapping the Intel® MPI Library numbers to specific suites and update versions Intel® Parallel Studio XE 2015 Update 1 Cluster Edition (released 26 November 2014) Intel® MPI Library 5.0 Intel® Registration Center Activation Date (yr.mo.day) Windows Version / build Linu...
S’abonner à Articles de la Zone des développeurs Intel

Supplemental Documentation

Intel® MKL Sparse BLAS Overview
Par Naveen Gv (Intel)Publié le 06/25/20120
Sparse BLAS routines can be useful to implement iterative methods for solving large sparse systems of equations or eigenvalue problems
Intel Guide for Developing Multithreaded Applications
Par adminPublié le 01/16/201224
The Intel® Guide for Developing Multithreaded Applications covers topics ranging from general advice applicable to any multithreading method to usage guidelines for Intel® software products to API-specific issues.
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Intel Parallel Studio XE 2016 Beta has Started!
Par Steve Lionel (Intel)4
The beta test for Intel Parallel Studio XE 2016, including Intel Fortran Compiler XE 16.0, has begun. For more details, a FAQ and a registration link, see Intel® Parallel Studio XE 2016 Beta Major Fortran features supported in this release are: Submodules from Fortran 2008 IMPURE ELEMENTAL from Fortran 2008 "Further Interoperability with C" features from TS29113 (Fortran 2015 draft) For more details see the release notes. Please use Intel Premier Support for any problems you encounter, rather than this forum. If you have questions about Fortran language features, you can ask them in this forum. Please note that the compiler in the initial beta version was built a couple of weeks ago and doesn't include all of the fixes you may have seen described as "fixed in a release later this year". The remainder of this post will be kept updated on "things you should know" about the beta. The current beta includes VS2010 Shell. A beta update will include VS2013 Shell instead. VS2010 Shell wi...
Webinar May 13 - What's New in Intel Fortran 16.0
Par Steve Lionel (Intel)8
Wed, May 13, 2015 12:00 PM - 1:00 PM EDT This session will cover new features in the Intel® Fortran compiler version 16, part of Intel® Parallel Studio XE 2016. Topics include new features from Fortran standards, new OpenMP* features and changes for users of Microsoft Visual Studio*. Register here This session will be recorded and the recording made available sometime afterward.
Dr Martyn Corden webinar on vectorization replayed
Par Tim Prince1
https://software.intel.com/en-us/videos/new-vectorization-features-of-th...
Install problems giving error no network access for offline install
Par Logan K.3
When trying to install Intel® Parallel Studio XE 2015 either by using the online installer or downloading the full package the installer will error out saying that there is no internet connection. For the offline download of the full installer package why would it receive an error for no internet access? The only prerequisite for this program is to have .net framework installed as listed in the help document. The program is supposed to install the necessary elements of Visual studio as well right? Or does the program have other prerequisites?
Unable to properly debug in VS 2013 with Intel 2015
Par goicox6
Dear All,  This a similar question to the one posted in https://software.intel.com/en-us/forums/topic/539492. In my case I have a mixed application .NET + Fortran DLL using VS 2013 and Fortran Composer 2015 Update 2.  There are few things not working properly in the debugger. These are related to the following code: pure subroutine ReaRateFT(PG, TG, yG, dp, icat, ReaRRx, ReaDHr) ![T]= K, [P]=Pa, [ReaRRx] = mol/s m3S, [ReaDHr]=J/mol real(8), intent(in) :: PG real(8), intent(in) :: TG real(8), intent(in) :: yG(IIc_FT) real(8), intent(in) :: dp integer(2), intent(in) :: icat real(8), intent(inout) :: ReaRRx(1:IIr_FT, 0:2) real(8), intent(inout) :: ReaDHr(1:IIr_FT) ! Local variables integer :: iWGS ! WaterGasShift index integer :: iHYD ! Hydrogenation index real(8) :: Pbar ! Press...
Locked source files during debug
Par Chris o.2
Hello, I am using  Intel Fortran 14.02.176 in VS2010  on my new computer with Win 8.1 When I debug my Fortran program all my source code file are locked for editing  When I stop debugging the files are editable again. This is annoying as the start of the program  is painfully long Before the interesting functions and subroutines. Earlier I had a computer with Win 7 and then I could edit the files during debug. Very conviient to add comments etc. Many thanks in advance for a tip! rehgards Chris PS: I have disabled "edit and continue" in options              
Installing Fortran Composer XE 2015 Version
Par Gerald R.1
I downloaded the full Composer XE 2015 Fortran version and run the exe with PC admin rights.  The installer started to unpack file to C:Programs Files(x86) folder and opened the Intel Installation window.  However, this window then immediately 'crashed-out', with nothing installed.   I downloaded the online 2015 installer version but the same thing happened. Next step was to download the Fortran 2013 SP1 version and installation proceeded up to the 'enter licence key no's', so installation appears to be okay for the 2013 version (I stopped the install at that point). My PC is running Windows 7 with M/S Visual Studio 2010 Pro installed, together with M/S .NET Framework 4.5.1. Any ideas on why the the 2015 install has a conflict but not 2103? Thank you, Gerald Reeves.  
Standards-conforming version of ISHA?
Par rorban1
Can anyone tell me if there is an exact standardized version of the Intel extension ISHA (arithmetic bit shift)? I tried ISHFT, but it doesn't do quite the same thing. (I am using it on INTEGER(4) types.) Thanks in advance.
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You can reply to any of the forum topics below by clicking on the title. Please do not include private information such as your email address or product serial number in your posts. If you need to share private information with an Intel employee, they can start a private thread for you.

New topic    Search within this forum     Subscribe to this forum


Intel Parallel Studio XE 2016 Beta has Started!
Par Steve Lionel (Intel)4
The beta test for Intel Parallel Studio XE 2016, including Intel Fortran Compiler XE 16.0, has begun. For more details, a FAQ and a registration link, see Intel® Parallel Studio XE 2016 Beta Major Fortran features supported in this release are: Submodules from Fortran 2008 IMPURE ELEMENTAL from Fortran 2008 "Further Interoperability with C" features from TS29113 (Fortran 2015 draft) For more details see the release notes. Please use Intel Premier Support for any problems you encounter, rather than this forum. If you have questions about Fortran language features, you can ask them in this forum. Please note that the compiler in the initial beta version was built a couple of weeks ago and doesn't include all of the fixes you may have seen described as "fixed in a release later this year". The remainder of this post will be kept updated on "things you should know" about the beta.
Webinar May 13 - What's New in Intel Fortran 16.0
Par Steve Lionel (Intel)0
Wed, May 13, 2015 12:00 PM - 1:00 PM EDT This session will cover new features in the Intel® Fortran compiler version 16, part of Intel® Parallel Studio XE 2016. Topics include new features from Fortran standards, new OpenMP* features and changes for users of Microsoft Visual Studio*. Register here This session will be recorded and the recording made available sometime afterward.
OS X 10.9 Xcode 5 error ld: library not found for -lcrt1.10.6.o
Par Ronald W Green (Intel)0
Environment:  OS X 10.9 (Mavericks) and Xcode 5.0 Command line compilations/links fail with "ld: library not found for -lcrt1.10.6.o" Affected compiler:  Intel Composer XE 2013 Update 1 Root cause:  Xcode 5.0 installation does not install all command line tools (include files, libraries, SDKs) need for the compiler to link user applications.  FIX: Install the Xcode 5.0 "Command Line Tools".  Follow this Knowledge Base article for installation of this package:  http://software.intel.com/en-us/articles/installing-intel-compilers-for-os-x-pre-requisite-xcode-command-line-tools
Compiler Installation and Uninstallation Help, Linux and Mac OS
Par Ronald W Green (Intel)7
  Installing the Intel compilers on Linux* and Mac OS* X requires that you install various prerequisite packages. Linux: Read this Help on Installing the Intel Compilers. Mac OS X: Read this article on Xcode and Command Line tools installation (prerequisite for installation and use) We also have an article on Linux Silent or Non-Interactive Installation Here And Mac OS X Silent or Non-Interactive Installation Here Having trouble REMOVING or UNINSTALLING the Intel Linux compilers?  Read this article: http://software.intel.com/en-us/articles/uninstall-intel-compiler-for-linux-when-uninstallsh-is-missing-or-not-functioning NOTE: ARTICLES such as this are not monitored on a regular basis - do NOT ask questions here, your quesiton may go unnoticed.  Please post all questions to the USER FORUM
ld: cannot find -lm
Par Ronald W Green (Intel)1
RHEL 6.x, FC14, FC13, FC12, SL6.x, CentOS 6, etc. and possibly other recent distributions: error when using -static or -fast: ld: cannot find -lm See this article: http://software.intel.com/en-us/articles/error-ld-cannot-find-lm/
Questions about Intel® Software Development Suite Student Edition for OS X
Par Belmiro C.0
Hi, I have some questions about Intel® Software Development Suite Student Edition for OS X: http://softwarestore.ispfulfillment.com/store/Product.aspx?skupart=I23S97 1. As shown in "product info", Intel Software Development Suite Student Edition for "Linux" and "Windows" includes the MKL. However, it seems that Intel Software Development Suite Student Edition for "Mac OS X" does not !?!?! Is it true??? 2. As shown in https://software.intel.com/en-us/articles/intel-fortran-composer-xe-2013... , it indicates that the Intel® Fortran Composer XE 2013 for OS X* only supports upto OS X* 10.8 “Mountain Lion". Therefore, how about the intel Fortran Composer XE for Mac OS X  in this Intel® Software Development Suite Student Edition?? Can it support OS X 10.9 and 10.10?? Thank you!! Belmiro
Small program segfaults on READ from internal file
Par Øyvind J.2
The following program gives a segfault with Intel 15.0.2 on Linux: PROGRAM read_empty_substing CHARACTER(LEN=20) :: c_in = "hello" CHARACTER(LEN=20) :: c_out INTEGER :: i_iostat ! These statements give a segfault with Intel 15.0.2 READ(c_in(2:1), '(A)') c_out READ(c_in(2:1), '(A)', IOSTAT=i_iostat) c_out ! The following statements give end-of-file as expected: !READ(c_in(2:1), *) c_out !READ(c_in(2:1), *, IOSTAT=i_iostat) c_out print *, TRIM(c_out) END PROGRAM As you can see, we try to read from an empty substring of c_in, and I do expect an error condition, i.e. i_iostat/=0. Instead I get a segfault. The read statements with format string segfaults, while the list directed read gives end-of-file. Am I supposed to check the length of the internal file before I read from it, or could this be a compiler bug? Øyvind ------------------------ (gdb) run Starting program: /fs/auto/home/oyvindj/tmp/read_segfault/a.out [Thread debugging using libthread_db enabled] ...
Compiler internal error in type overloading
Par F R.1
I took an example of type overloading from a website and unfortunately on compilation with ifort I am getting an internal error. The code is attached herewith to look at. 
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