As processors evolve, it is becoming more and more critical to both vectorize (use AVX or SIMD instructions) and thread software to realize the full performance potential of the processor. In some cases, code that is vectorized and threaded can be more than 175X faster than unthreaded / unvectorized code and about 7X faster than code that is only threaded or vectorized. And that gap is growing with every new processor generation.
Session 2 Intel VTune Amplifier: Optimize serial and parallel performance with an advanced performance and thread profiler (Intel® VTune™ Amplifier). Tune C, C++, FORTRAN, Assembly and Java* applications.
