Run your binary through VTune to look for "Retiring" slots (efficiency) and "DRAM Bound" bottlenecks. The 2017 VTune GUI offers a "Hotspots" analysis that visually maps CPU time to source lines.
Use cases and impact
Do not use -O2 . Go for:
Another major focus was the "Roofline Analysis" in Intel Advisor. This visual model helped developers understand if their application was limited by the processor's compute capacity or by memory bandwidth. This "optimization roadmap" took the guesswork out of where to focus tuning efforts. The Shift to oneAPI intel parallel studio xe 2017
Key components
That 4% didn't matter to the defense contract. But it mattered to Aris. Because somewhere, in the deep stack of the 2017 toolchain, a human engineer at Intel had written a heuristic that said: "When you see this pattern, assume alignment." That heuristic was wrong for his specific case. But the tool let him see the error. Run your binary through VTune to look for
(Broadwell), ensuring code was ready for then-cutting-edge data centers. Modern Language Standards: It pushed forward with full support for and almost complete support for Fortran 2008 Go for: Another major focus was the "Roofline