Developer Guide

Developer Guide for Intel® oneAPI Math Kernel Library Windows*

ID 766692
Date 11/07/2023
Public

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Document Table of Contents

Using MKL_DIRECT_CALL in C Applications

The following examples of code and link lines show how to activate direct calls to Intel® oneAPI Math Kernel Library (oneMKL) kernels in C applications:

  • Include the mkl.h header file:

    #include "mkl.h" 
    int main(void) {
        
    // Call Intel MKL DGEMM 
        
    return 0;
    }
    
  • For multi-threaded Intel® oneAPI Math Kernel Library (oneMKL), compile withMKL_DIRECT_CALL preprocessor macro:

    icx /DMKL_DIRECT_CALL /Qstd=c99 your_application.c mkl_intel_lp64.lib mkl_core.lib mkl_intel_thread.lib /Qopenmp -I%MKLROOT%/include
  • To use Intel® oneAPI Math Kernel Library (oneMKL) in the sequential mode, compile withMKL_DIRECT_CALL_SEQ preprocessor macro:

    icx /DMKL_DIRECT_CALL_SEQ /Qstd=c99 your_application.c mkl_intel_lp64.lib mkl_core.lib mkl_sequential.lib -I%MKLROOT%/include

Product and Performance Information

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.

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