I won a Xeon Phi programming manual at an Intel talk; I can assure you that even though it's easy to program, it is absolutely not easy to optimise. The amount

I won a Xeon Phi programming manual at an Intel talk; I can assure you that even though it's easy to program, it is absolutely not easy to optimise. The amount of compiler+profiler+cilk+… tooling Intel had to provide was impressive.