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The cluster 64-bit login node requires Gnu GCC 64-bit compiler and as a result becomes the default native compiler. No Module setup is required.
Documentation is available at GCC online documentation or from the following man pages:
> man gcc
> man g77
> man gfortran
Note, the system default install of gcc is ver. 4.1. This can be an issue for some types of dependencies. For example, the gfortran option for openmp usage requires gcc ver. 4.7 or newer. You may access this version by the following:
> module load gcc
G95
G95 is a stable, production Fortran 95 compiler available for multiple cpu architectures and operating systems. There are two versions on the cluster, The module command makes a distinction. Using "module load g95" gets the 32-bit version and "module load g95-64" gets the 64-bit version.
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