Fortran can produce faster code than C or C++ because it forces functions to not be aliasing for different arguments. <a href="https://stackoverflow.com/questions/146159/is-fortran-easier-to-optimize-than-c-for-heavy-calculations#146186" rel="nofollow">https://stackoverflow.com/questions/146159/is-fortran-easier...</a>
They use OpenBLAS. PyTorch is slower presumably due to its poor threading. Nothing special about Fortran here, any language without a global lock would have the same result.
Very nice to see Fortran in that space!<p>That page doesn’t display very well on mobile though (header seems correct, but text is too wide and you need to zoom out. Safari mobile)