Intel® oneAPI Math Kernel Library

Highly optimized, fast, and complete library of math functions for Intel® CPUs and GPUs. Accelerate math processing routines, increase application performance, and reduce development time.

Give Intel your input on Intel® oneAPI Math Kernel Library (oneMKL) to help make improvements to meet your needs:
 

Intel®-Optimized Math Library for Numerical Computing on CPUs & GPUs

Optimized Library for Scientific Computing
  • The fastest and most-used math library for Intel®-based systems† 
  • Enhanced math routines enable developers and data scientists to create performant science, engineering, or financial applications 
  • Core functions include BLAS, LAPACK, sparse solvers, fast Fourier transforms (FFT), random number generator functions (RNG), summary statistics, data fitting, and vector math 
  • Optimizes applications for current and future generations of Intel CPUs, GPUs, and other accelerators 
  • Is a seamless upgrade for previous users of the Intel® Math Kernel Library (Intel® MKL) 

 

What's New
  • The oneMKL SYCL library was partitioned to provide a smaller binary footprint for developers and users of oneMKL
  • Increased CUDA* library function API compatibility coverage on Intel CPUs and GPUs
  • Delivers High-Performance LINPACK (HPL) and HPL-AI benchmarks optimized for Intel® Xeon® CPU Max Series and Intel® Data Center GPU Max Series
  • BLAS
    • Improved general performance of GEMV and several BLAS level-1 routines on Intel Data Center GPU Max Series
  • DFT
    • Enabling FFT larger than 4 GiB (up to 64 GiB of data) on Intel Data Center GPU Max Series.
    • Improved FFT performance on Intel Data Center GPU Max Series 
  • LAPACK
    • Introducing SYCL APIs to compute nonpivoting LU factorization with C and Fortran OpenMP* offload support
    • Introducing SYCL APIs to compute batched matrix inverse of a group of general matrices 
  • Vector Math
    • Integrates vector math optimizations into random number generators for high-performance computing 
    • Supports vector math for FP16 datatype on Intel GPUs
    • Added OpenMP 5.1 for C offload support 
Download as Part of the Toolkit

oneMKL is included in the Intel oneAPI Base Toolkit, which is a core set of tools and libraries for developing high-performance, data-centric applications across diverse architectures.

Download the Stand-Alone Version

A stand-alone download of oneMKL is available. You can download binaries from Intel or choose your preferred repository.

Develop in the Cloud

Build and optimize oneAPI multiarchitecture applications using the latest Intel-optimized oneAPI and AI tools, and test your workloads across Intel® CPUs and GPUs. No hardware installations, software downloads, or configuration necessary.

For FPGA and People's Republic of China (PRC) Based Developers

Help oneMKL Evolve

oneMKL is part of the oneAPI industry standards initiative. We welcome you to participate.

 

oneAPI Specification for oneMKL

Open Source oneMKL Interfaces


 

What You Need
  • Get started by choosing the best interface for your application:
  • oneMKL  is available as part of the Intel® oneAPI Base Toolkit.
  • Using oneMKL with Intel® MPI library or Intel® Fortran Compilers requires the Intel® HPC Toolkit.

Explore the Intel oneAPI Base Toolkit

Explore the Intel HPC Toolkit

Learn about SYCL*

Features

Linear Algebra

Speed up linear algebra computations with low-level routines that operate on vectors and matrices, and are compatible with these industry-standard BLAS and LAPACK operations:

  • Level 1: Vector-vector operations
  • Level 2: Matrix-vector operations
  • Level 3: Matrix-matrix operations


Sparse Linear Algebra Functions

Perform various operations on sparse matrices with low-level and inspector-executor routines including the following:

  • Multiply sparse matrix with dense vector
  • Multiply sparse matrix with dense matrix
  • Solve linear systems with triangular sparse matrices
  • Solve linear systems with general sparse matrices

Fast Fourier Transforms (FFT)

Transform a signal from its original domain (typically time or space) into a representation in the frequency domain and back. Use FFT functions in one, two, or three dimensions with support for mixed radices. The supported functions include complex-to-complex and real-to-complex transforms of arbitrary length in single-precision and double-precision.

Random Number Generator Functions (RNG)

Use common pseudorandom, quasi-random, and nondeterministic random number engines to solve continuous and discrete distributions.

Data Fitting

Provide spline-based interpolation capabilities that you can use to approximate functions, function derivatives or integrals, and perform cell search operations.

Vector Math

Balance accuracy and performance with vector-based elementary functions. Manipulate values with traditional algebraic and trigonometric functions.

Summary Statistics 

Compute basic statistical estimates (such as raw or central sums and moments) for single- and double-precision multidimensional datasets.

Benchmarks

These benchmarks are offered to help you make informed decisions about which routines to use in your applications, including performance for each major function domain in oneMKL by processor family. Some benchmark charts only include absolute performance measurements for specific problem sizes. Others compare previous versions, popular alternate open source libraries, and other functions for oneMKL.

To assess performance in high-performance computing environments, see the oneMKL Benchmarks Suite. The suite includes the Intel® Distribution for LINPACK* Benchmark, Intel® Distribution for MP LINPACK* Benchmark for clusters, and Intel® Optimized High Performance Conjugate Gradient Benchmark from the latest oneMKL release.

oneMKL Benchmarks Suite

Threaded SGEMM and BF16 GEMM Performance

LAPACK Performance Scaling at High Thread Count

Performance Advantage of one M K L FFT over FFTW library

Fast Fourier Transform Performance

Sparse Matrix-Vector Product Performance

Random Number Generator Performs Best with High Thread Count

Vector Math Function Performance

PARDISO Runs Faster than MUMPS Library

Training Resources

Understand oneMKL

 NEW Intel® oneAPI Math Kernel Library Linking (command-line link tool and link line advisor)

 

Take Advantage of SYCL

 NEW  How to Move from CUDA Math Library Calls to oneMKL

 

🗐 View All Resources

🗗 Training & Events Calendar

Optimize Performance

In-Depth Videos
 

 NEW  Why oneMKL? Accelerate Math Computation on the Latest Hardware [59:07]

Specifications

Processors:

  • Intel Atom® processors
  • Intel® Core™ processors
  • Intel® Xeon® Scalable processors


GPUs:

  • Intel® UHD Graphics for 11th generation Intel processors or newer
  • Intel® Iris® Xe graphics
  • Intel® Arc™ graphics
  • Intel® Data Center GPU Flex Series
  • Intel® Data Center GPU Max Series


Languages:

  • SYCL
  • C and C++
  • Fortran
     

For more information, see the system requirements. 

Operating systems:

  • Windows
  • Linux


Compilers:

  • Intel® oneAPI DPC++/C++ Compiler
  • GNU Compiler Collection (GCC)*
  • Intel Fortran Compiler
  • Intel Fortran Compiler Classic
  • Other compilers that follow the same standards

Development environments:

  • Windows: Microsoft Visual Studio*
  • Linux: Eclipse* and Eclipse CDT (C/C++ Development Tooling)*


Threading models:

  • Intel® oneAPI Threading Building Blocks
  • OpenMP

 

Get Help

Your success is our success. Access these support resources when you need assistance.


Source

† Data from Evans Data Software Developer survey, 2022

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