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Fortran compilers
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The recommended Fortran compiler is the Intel Fortran Compiler; ifort.
The g77 compiler is also installed, but we do not recommend it for general usage.
Usage of the Intel ifort compiler
Plain Fortran codes
For plain Fortran codes (all Fortran standards) the general form for usage of the Intel ifort compiler is as follows:
ifort [options] file1 [file2 ...] - Same for ALL Fortran standards
where options represents zero or more compiler options, and fileN
is a Fortran source (.f .for .ftn .f90 .fpp .F .FOR .F90 .i .i90),
assembly (.s .S), object (.o), static library (.a), or an other
linkable file. Commonly used options may be placed in the ifort.cfg
file.
OpenMP based Fortran codes
The form above also applies
for Fortran codes parallelized with OpenMP (www.openmp.org, Wikipedia); you only have to select the
necessary compiler options for OpenMP.
MPI based Fortran codes
For Fortran codes parallelized with MPI the general form is quite similar:
mpif90 [options] file1 [file2 ...]
mpif90 is using the the Intel Ifort compiler, it is just a wrapper that invokes all the necessary MPI stuff automatically for you. Therefore, everything else is the same for compiling MPI codes as for compiling plain Fortran codes. Please check the section abut MPI Libraries for more information about using MPI on Stallo.
Intel Fortran Compiler Documentation
In general we will recommend our users to approach the Intel ifort documentation in the following order:
- Intel® Fortran Compiler 10.1 for Linux* – Get Help (web page at Intel)
- Intel® Fortran Compiler 10.1 for Linux* – Documentation (web page at Intel)
- Intel® Fortran Compiler 10.1 for Linux* – Product Tips and Samples (web page at Intel)
