FFI for Intel(R) MKL

2 unstable releases

0.2.0+mkl2020.1 Jun 23, 2020
0.1.0 Dec 14, 2019

#287 in #ffi

MIT license

14K SLoC


crate crate.io description
intel-mkl-src Crate Source crate for Intel-MKL
intel-mkl-sys Crate FFI for Intel-MKL vector math, and statistical functions
intel-mkl-tool Crate CLI utility for redistributing Intel-MKL

Redistribution of Intel MKL as a crate. Tested on Linux, macOS, and Windows (since 0.4.0)

Supported features

  • mkl-*-*-* features specify which MKL to be linked

    • static means MKL will be linked statically, and dynamic means MKL will be linked dynamically

    • lp64 means 32-bit integer interface, ilp64 means 64-bit integer interface

    • iomp means MKL uses Intel OpenMP, seq means sequential execution, e.g. no parallelization

      • OpenMP is not supported for Windows currently #46
    • default is mkl-static-ilp64-seq, and you must choose one of them.

    • macOS is not supported #42

      feature name Linux macOS Windows
      mkl-static-lp64-iomp ✔️ - -
      mkl-static-lp64-seq ✔️ - ✔️
      mkl-static-ilp64-iomp ✔️ - -
      mkl-static-ilp64-seq ✔️ - ✔️
      mkl-dynamic-lp64-iomp ✔️ ✔️ -
      mkl-dynamic-lp64-seq ✔️ ✔️ ✔️
      mkl-dynamic-ilp64-iomp ✔️ ✔️ -
      mkl-dynamic-ilp64-seq ✔️ ✔️ ✔️
  • download feature enables downloading MKL archive managed by this project from AWS S3 (default ON)


This crate is a *-src crate. This downloads and link Intel MKL, but does not introduce any symbols. Please use blas-sys, lapack-sys, or fftw-sys to use BLAS, LAPACK, FFTW interface of MKL, e.g.

fftw-sys = { version = "0.4", features = ["intel-mkl"] }

How to find system MKL libraries

This crate seeks system MKL libraries, e.g. installed by apt, yum, or official manual installer, as following manner:

  • Check ${OUT_DIR} where previous build has downloaded
  • Seek using pkg-config crate
    • ${PKG_CONFIG_PATH} has to be set correctly. It may not be set by default in usual install.
    • You can confirm it by checking the following command returns error.
      pkg-config --libs mkl-dynamic-lp64-iomp
  • (experimental) Seek ${XDG_DATA_HOME}/intel-mkl-tool
  • Seek a directory set by ${MKLROOT} environment variable
  • Seek default installation path
    • /opt/intel/mkl for Linux
    • C:/Program Files (x86)/IntelSWTools/compilers_and_libraries/windows for Windows

If not found any MKL library and download feature is ON, this crate will download archive from AWS S3 rust-intel-mkl bucket.


MKL is distributed under the Intel Simplified Software License for Intel(R) Math Kernel Library, See License.txt. Some wrapper codes are licensed by MIT License (see the header of each file).