Talk:CFLAGS

Unless a reference is being added which states that passing  together with   really enables OpenMP-based parallel loops I am going to strip the recommendation of enabling OpenMP globally since this is pure non-sense: If a package does not use OpenMP there is afaik no way to automatically enable it. On the other hand what would help generically is loop-rewriting to use vectorization (see, enabled with  ). Rewriting loops for processor-cache-awareness probably only gives a speed-up in HPC code since modern CPUs have scatter/gather and the likes (see also AVX2).