Getting Started Guide

  • XX.XX
  • 12/16/2019
  • Public Content

Get Started with the Intel® Fortran Compiler 19.1 for
Windows*

The Intel® Fortran Compiler provides optimizations that help your applications to run faster in Intel® 64
and IA-32
architectures, with support for the latest Fortran language standards. This compiler produces optimized code that can run significantly faster by taking advantage of the ever-increasing core count and vector register width in Intel® Xeon® processors and compatible processors. The Intel® Compiler will help you boost application performance through superior optimizations and Single Instruction Multiple Data (SIMD) vectorization, integration with Intel® Performance Libraries, and by leveraging the latest OpenMP* 5.0 parallel programming model.
Start using the compiler from the command line or within Microsoft Visual Studio*.
The Intel Fortran Compiler is available as part of Intel® Parallel Studio XE.

Before You Begin

You must have a version of Microsoft Visual Studio* installed to use the compiler.
The compiler integrates into the following versions of Microsoft Visual Studio*:
  • Visual Studio* 2019
  • Visual Studio* 2017
For full functionality within Visual Studio, including debugging and development, Visual Studio* Community Edition or higher is required. Visual Studio* Express Edition allows only command-line builds. For all versions, Microsoft Fortran support must be selected as part of the Visual Studio install. For Visual Studio* 2015 and later, you must use a custom install to select this option.
You typically do not need to set the environment variables on Windows*, as the compiler command-line window sets these variables for you automatically. If you need to set the environment variables, run the environment script as described in the suite-specific Get Started documentation.
<install_dir>
is the installation directory. By default, it is
C:\Program Files (x86)\IntelSWTools
.

Option 1: Use the Command Line

Follow the steps below to invoke the compiler from within the Eclipse* CDT
Step 1: Open a command prompt.
On Windows 10
  1. Open the
    Start
    menu
  2. Select
    Compiler Command Prompt
    under Intel Parallel Studio XE 2020
On other versions of Windows*
  1. Open the
    Start
    menu
  2. Select
    Command prompt with Intel Compiler
    under
    Intel Parallel Studio XE 2020 > Compiler and Performance Libraries
  3. Select a build environment
Step 2: Invoke the compiler.
Use the command below to invoke the compiler from the command line:
  • ifort
    [options... ] inputfile(s) [/link link_options]
Use the command below to display all available compiler options:
  • ifort
    /help

Option 2: Use Microsoft Visual Studio*

Follow the steps below to invoke the compiler from within Microsoft Visual Studio*.
Step 1: Build a binary:
  1. Launch Microsoft Visual Studio*.
  2. Select
    File
    New
    Project
    .
  3. In the
    New Project
    window, select a project type under
    Intel® Visual Fortran
    .
  4. Select a template and click
    OK
    .
  5. Select
    Build
    Build Solution
    .
The results of the compilation display in the
Output
window.
Step 2: Set build configurations:
  1. Right click on
    Project
    in
    Solution Explorer > Properties
  2. Locate
    Fortran
    in the list and expand the heading
  3. Walk through the available properties to select your configuration
Switch to the Intel® Fortran Compiler from the Microsoft Visual Studio* Fortran Compiler
  1. Launch Microsoft Visual Studio* and open a solution or project
  2. Select
    Project > Intel Compiler > Use Intel Fortran
  3. Select
    OK
  4. Select
    Build > Rebuild Solution
Switch to the Microsoft Visual Studio* Fortran Compiler from the Intel® Fortran Compiler
This action updates the solution file to use the Microsoft Visual Studio Fortran compiler. All configurations of affected projects are automatically cleaned unless you select
Do not clean project(s)
. If you choose not to clean projects, you will need to rebuild updated projects to ensure all source files are compiled with the new compiler.
  1. Launch Microsoft Visual Studio* and open a solution or project
  2. Select
    Project > Intel Compiler > Use Intel Visual Fortran
To change the compiler version in Microsoft Visual Studio*, navigate to
Tools > Options > Intel Compilers and Tools > Fortran > Compilers
.

Build a Program

Follow the steps below to test your compiler installation and build a program.
  1. Use a text editor to create a file called "hello.f90" with the following contents:
    print *, “hello!” end
  2. From a command window, issue the following command:
    C:\users\me> ifort hello.f90
  3. Now you have an executable called "hello", which can be run and will give immediate feedback.
    C:\users\me> hello hello!
    Fortran supports parallel processing by replicating images and allowing inter-image communication. This is done using coarrays, described in Intel® Fortran Compiler Tutorial: Using Coarray Fortran. Even though the "hello" program used above does not contain any coarray data, it can still be run as a coarray program.
    C:\users\me> ifort /Qcoarray /Qcoarray-num-images:4 hello.f90 C:\users\me> hello hello! hello! hello! hello!

Next Steps

Find More: Intel® Fortran Compiler

Document
Description
The Developer Guide and Reference contains information on:
  • How to use the command line
    or Microsoft* Visual Studio*
  • Support for the latest compiler technologies and architectures.
  • Compiler reference material, including options, program structures, class and math libraries, and much more
Find the latest code samples and product support. Learn specific compiler optimizations, features, tools, and programming concepts.
Information on product installation, new and changed features, and issues that are not described in the product documentation.
This link takes you an archive of Intel® Fortran Compiler release notes on the Intel® Developer Zone.
Software product documentation on the Intel® Developer Zone.
Other Help
You can access general help for compiler options after setting up the environment by entering
ifort /help
at the command line.

Find More: Intel® Parallel Studio

Document
Description
The online training site is an excellent resource for training on using the compiler in conjunction with your product suite.
Information on the product installation, new and changed features, and issues that are not described in the product documentation.
This link takes you to the Intel® Developer Zone.
Code samples and corresponding tutorials. Learn specific compiler optimizations, features, tools, and programming concepts.

Notices and Disclaimers

Intel, the Intel logo, Intel Atom, Intel Core, Intel Xeon Phi, VTune and Xeon are trademarks of Intel Corporation in the U.S. and/or other countries.
*Other names and brands may be claimed as the property of others.
Microsoft, Windows, and the Windows logo are trademarks, or registered trademarks of Microsoft Corporation in the United States and/or other countries.
© Intel Corporation.
This software and the related documents are Intel copyrighted materials, and your use of them is governed by the express license under which they were provided to you (
License
). Unless the License provides otherwise, you may not use, modify, copy, publish, distribute, disclose or transmit this software or the related documents without Intel's prior written permission.
This software and the related documents are provided as is, with no express or implied warranties, other than those that are expressly stated in the License.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804