Developer Guide

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Using MKL_DIRECT_CALL in Fortran Applications

The following examples of code and link lines show how to activate direct calls to
Intel® oneAPI Math Kernel Library
kernels in Fortran applications:
  • Include
    mkl_direct_call.fi
    , to be preprocessed by the Fortran compiler preprocessor
    # include "mkl_direct_call.fi" program DGEMM_MAIN .... * Call Intel MKL DGEMM .... call sub1() stop 1 end * A subroutine that calls DGEMM subroutine sub1 * Call Intel MKL DGEMM end
  • For multi-threaded
    Intel® oneAPI Math Kernel Library
    , compile with
    /
    fpp
    option for Intel Fortran compiler and with
    MKL_DIRECT_CALL
    preprocessor macro:
    ifort /DMKL_DIRECT_CALL /fpp your_application.f mkl_intel_lp64.lib mkl_core.lib mkl_intel_thread.lib /Qopenmp -I%MKLROOT%/include
  • To use
    Intel® oneAPI Math Kernel Library
    in the sequential mode, compile with
    /
    fpp
    option for Intel Fortran compiler (or with
    -Mpreprocess
    for PGI compilers) and with
    MKL_DIRECT_CALL_SEQ
    preprocessor macro:
    ifort /DMKL_DIRECT_CALL_SEQ /fpp your_application.f 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.
Notice revision #20201201

Product and Performance Information

1

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