There are two different Fortran compilers on the cluster: one is
gfortran which is part of the Gnu Compiler Collection (GCC) and the other is the Intel Fortran Compiler.
GCC Fortran compiler (gfortran)
When no module is specifically loaded,
gfortran is already available in the version 4.8.5. It is however more practical to use the newer version 6.3.0 by loading the module
$ module load gcc $ gfortran --version GNU Fortran (GCC) 7.3.1 20180303 (Red Hat 7.3.1-5) Copyright (C) 2017 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE
Intel Fortran compiler
There are multiple versions of the Intel compiler installed, all of them require loading the corresponding module. The various available modules can be listed with the command
module avail intel/compiler. Here is an example call for the Fortran compiler:
$ module load intel/compiler $ ifort --version ifort (IFORT) 18.0.1 20171018 Copyright (C) 1985-2017 Intel Corporation. All rights reserved.
In this example, the module was loaded without specifying a version. In that case, the default setting for the module is used (it is marked with
(D) on a