anybody using Intel (oneAPI) compilers?

[Pedro Valdez]

These are now free, so I decided to try it to see if any code runs faster than using gcc/gfortran. There are a few varieties, you need the HPC pack to get fortran. Interestingly it has latest (2023) compilers and classic (2021) compilers. It gives a warning that classic compilers are deprecated. I stuck with the classic compilers because the new ones have different commands, e.g. ifx for fortran. Also noticed that it has mpif90 straight out of the box, but this points to gfortran. So I built openmpi with the classic compilers. I set up PATH environment variable so that openmpi mpif90 comes before Intel mpif90. But guess what? mpif90 still uses gfortran, and mpicc still points to gcc, which defeats the purpose of using Intel compiler.

BTW mpich contains ancient code that foils newer compilers. so I didn't even try them.