[dandanua]

For newcomers my main tip is to use views for array slices (for example, via the @view and @views macros), since by default Julia creates copies of slices. Broadcast operation (the dot syntax) is another super useful instrument for speeding up vectorized operations. You can write fast GPU code with them without resorting to GPU kernels, in some cases. Although GPU kernel programming via CUDA.jl is convenient in Julia, once you get used to it.