WebMO Home Page
   Pro Features
   Enterprise Features
   Compare Features
   System Requirements
   Screen Shots
   Working Demo
   Support & Tutorials
   Support Forum
   Revision History
   Mailing List
   Educational Resources
   License Info
   Buy WebMO Pro/Ent
   Obtain Free License
WebMO - Computational chemistry on the WWW
Recent news

WebMO 19.0 is now available for free download!

WebMO 19.0 Pro and Enterprise have a variety of additional features and is available for purchase.

The WebMO app is now available for iOS and Android.

March 31, 2020
Intel Fortran Compiler Installation Instructions for Linux

  1. Obtain Intel Fortran Compiler
    The Intel Fortran Compiler Professional Edition for Linux is a commercial software product available for commercial or academic purchase. This compiler comes with the Intel Math Kernal Library (MKL) for optimized floating point operations. One can also purchase the Fortran compiler as part of the Intel Compiler Suite Professional Edition for Linux that contains both the Fortran and the C/C++ Professional Compilers. However, Intel also offers a free personal non-commercial unsupported version that is identical to the commerical version. Upon registering for the free unsupported version, you will be sent an email message with download information and an attached license file. Download the latest version of the compiler for your architecture (32-bit Linux = IA-32; 64-bit Linux = Intel64; both = IA-32/Interl64), for example l_cprof_p_11.1.056.tgz (488 MB).
  2. Extract the Intel Fortran Compiler tar file into a new directory
      # tar xzf l_cprof_p_11.1.056.tgz
  3. Install license file
      # mkdir -p /opt/intel/licenses
      # cp -p NCOM_L_CMP__?????????????.lic /opt/intel/licenses/
  4. Install the Intel Fortran Compiler
      # cd l_cprof_p_11.1.056
      # ./install.sh
    Accept all defaults
    Ignore warnings about
          No compatible Java Runtime Environment (JRE) found
          operating system type is not supported
  5. Clean up
      # cd ..
      # rm -rf l_cprof_p_11.1.056
      # exit
  6. Compile and link a program
      $ cd ~
      $ mkdir test
      $ cd test
      $ source /opt/intel/Compiler/11.1/056/bin/ifortvars.sh intel64
      $ ifort -c hello.f
      $ ifort -o hello hello.o
      $ ./hello
  7. Some useful compiler switches
      -w ignore warnings (very useful for fortran77 code)
      -Vaxlib link vax compatibility library
  8. Documentation
    For quick help on compiler options
      $ man ifort
    Complete documentation is found in
  9. Workarounds
    • If necessary for executables to run, add ifort libraries to dynamic linker list
        # vi /etc/ld.so.conf
        add the following lines to this file
        # /sbin/ldconfig
    • Alternatively, if library files cannot be found, define the LD_LIBRARY_PATH environmental variable to define their location, for example
        $ export LD_LIBRARY_PATH=/opt/intel/Compiler/11.1/056/lib/intel64:/opt/intel/Compiler/11.1/056/mkl/lib/em64t
  10. Notes
    • The Intel C/C++ Compiler Professional Edition for Linux can be installed in a completely analogous fashion
Copyright © 2009, WebMO, LLC, all rights reserved.