Intel mkl basics (2) layered structure of MKL layered model Concept

Reference: http://software.intel.com/sites/products/documentation/hpc/mkl/mkl_userguide_win/mkl_userguide_win.pdf (search for "layered model concept ")

To support multiple compilers and interfaces, different OpenMP implementations, serial and multithreading, and a wide range of processors, Intel MKL adopts a structured design. To support different interfaces, thread models, and processor computing, Intel MKL is divided into the following three parts:
1. interface layer
2. Threading layer thread Layer
3. Computational layer computing layer

To support the thread models of different compilers, an additional layer is required, not part of Intel MKL, that is, the compiler Runtime Library RTL (compiler run-time libraries ).