![]() ![]() Each circle corresponds to one loop or functionĪdvisor " Roofline Analysis" helps to identify if given loop/function is memory or CPU bound. Roofline Performance Model automation integrated with other features in Intel Advisor. Intel Advisor automates the Roofline Performance Model first proposed at Berkeley and extended at the University of Lisbon. It also supports analysis of "explicitly" vectorized codes which use OpenMP 4.x and newer as well as codes or written using C vector intrinsics or assembly language. It supports analysis of scalar, SSE, AVX, AVX2 and AVX-512-enabled codes generated by Intel, GNU and Microsoft compilers auto-vectorization. Intel Advisor helps find the loops that will benefit from better vectorization, identify where it is safe to force compiler vectorization. This can greatly increase performance by reducing loop overhead and making better use of the multiple math units in each core. Vectorization is the operation of Single Instruction Multiple Data (SIMD) instructions (like Intel Advanced Vector Extensions and Intel Advanced Vector Extensions 512) on multiple objects in parallel within a single CPU core.
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