[wtcactus]

In my experience, Fortran compiler is heavily optimized. It competes head to head with C.

Julia’s on the other hand, many times puts out very unoptimized code.

Mind you, last time I looked at Julia was 2-3 years ago, maybe things have changed.

[patagurbon]

If you write Julia similar to Fortran, with explicit argument types and for loops and avoiding allocations it shouldn’t be too far off. Fortran IIRC has a few semantics which might make it more optimal in a few cases like aliasing

But indeed there are almost certainly less performance surprises in Fortran