Identify the architecture of your target machine:

Reason:

Because

Intel® oneAPI Math Kernel Library

libraries are located in directories corresponding to your particular architecture (see

Architecture Support

), you should provide proper paths on your link lines (see

Linking Examples

).

To configure your development environment for the use with

Intel® oneAPI Math Kernel Library

, set your environment variables using the script corresponding to your architecture (see Scripts to Set Environment Variables Setting Environment Variables for details).

Identify all

Intel® oneAPI Math Kernel Library

function domains that you require:

Reason:

The function domain you intend to use narrows the search in the

Intel® oneAPI Math Kernel Library

Developer Reference

for specific routines you need. Additionally, if you are using the

Intel® oneAPI Math Kernel Library

cluster software, your link line is function-domain specific (seeWorking with the Intel® oneAPI Math Kernel Library Cluster Software). Coding tips may also depend on the function domain (see Other Tips and Techniques to Improve Performance).

Intel® oneAPI Math Kernel Library

provides support for both Fortran and C/C++ programming. Identify the language interfaces that your function domains support (see Appendix A: Intel® oneAPI Math Kernel Library Language Interfaces Support).

Reason:

Intel® oneAPI Math Kernel Library

provides language-specific include files for each function domain to simplify program development (seeLanguage Interfaces Support_ by Function Domain).

For a list of language-specific interface libraries and modules and an example how to generate them, see also Using Language-Specific Interfaces with Intel® oneAPI Math Kernel Library.

If your system is based on the Intel 64 architecture, identify

whether your application performs calculations with large data arrays (of more than 2

31

-1 elements).

Reason:

To operate on large data arrays, you need to select the ILP64 interface, where integers are 64-bit; otherwise, use the default, LP64, interface, where integers are 32-bit (see Using the ILP64 Interface vs).

Identify whether and how your application is threaded:

Reason:

The compiler you use to thread your application determines which threading library you should link with your application. For applications threaded with a third-party compiler you may need to use

Intel® oneAPI Math Kernel Library

in the sequential mode (for more information, seeLinking with Threading Libraries).

If your application uses an OpenMP* threading run-time library, determine the number of threads you want

Intel® oneAPI Math Kernel Library

to use.

Reason:

By default, the OpenMP* run-time library sets the number of threads for

Intel® oneAPI Math Kernel Library

. If you need a different number, you have to set it yourself using one of the available mechanisms. For more information, seeImproving Performance with Threading.

Decide which linking model is appropriate for linking your application with

Intel® oneAPI Math Kernel Library

libraries:

Reason:

The link libraries for static and dynamic linking are different. For the list of link libraries for static and dynamic models, linking examples, and other relevant topics, like how to save disk space by creating a custom dynamic library, see Linking Your Application with the Intel® oneAPI Math Kernel Library.

Decide what MPI you will use with the

Intel® oneAPI Math Kernel Library

cluster software. You are strongly encouraged to use the latest available version of Intel® MPI.

Reason:

To link your application with ScaLAPACK and/or Cluster FFT, the libraries corresponding to your particular MPI should be listed on the link line (see Working with the Intel® oneAPI Math Kernel Library Cluster Software).