No need to bother with LLVM16 and / or GCC. Enabling avx2 for Clang compiler produced following results that are more or less in line with what was expected.

No need to bother with LLVM16 and / or GCC. Enabling avx2 for Clang compiler produced following results that are more or less in line with what was expected. rust - By-Copy: 2683, By-Borrow: 2697 c++ - By-Copy: 2577, By-Ref: 2600 Either is way faster than the result from the original post and no rust does non win this "competition". C++ is a bit faster (see also the results from other poster above) but not by much.