Open64
From MohidWiki
Open64 is a free, high-performance C/C++ and Fortran 90/95 compiler suite, optimized for 64bit architectures.
It is implemented in the MOHID linux makefile and successfully builds MOHID. The MOHID build with openf95 requires that the hdf5 libraries be compiled with the Open64 fortran compiler.
It is an alternate compiler to ifort in Linux for MOHID.