The accelerate-examples package demonstrates a range of computational kernels and a few complete (albeit small) applications, as well as a regression test suite. To install it:

cabal install accelerate-examples -fllvm-cpu

(Optional) If you have a CUDA capable NVIDIA GPU, add the flag -fllvm-ptx to the above command line in order to enable the accelerate-llvm-ptx backend.

This package includes the regression test suite for Accelerate: accelerate-nofib. In future we would also like to expand this to include benchmarks in order to track performance regressions as well. If you are experiencing problems with Accelerate, try running the test suite (it will take some time) to hopefully narrow down the problem then open a ticket on the issue tracker.

Following are a few short example programs demonstrating language features and extra libraries.


Short example programs demonstrating particular language operations or libraries.

  • Mandelbrot set: Generation of the classic Mandelbrot set fractal. Topics include:

    • Complex numbers
    • Creating arrays with the generate operator
    • Scalar iteration with while
    • Working with colours with the colour-accelerate library
    • Writing BMP images to disk with the accelerate-io library
  • Canny edge detector: Implementation of the Canny edge detection technique to extract edges from images. Topics include:

    • Image processing kernels using the stencil operator
    • Converting between Accelerate and Repa array representations using the accelerate-io library
  • Fluid simulation: A simple, interactive, particle-based fluid simulation. Topics include:

    • The stencil operator
    • Using Haskell as a meta-programming language to help generate the Accelerate program
  • N-body simulation: N-body simulation of a group of bodies undergoing gravitational interaction. Demonstrates:

  • Ray-tracer: A simple real-time ray-tracer. Demonstrates:

    • Use of linear-accelerate library
    • Defining new data types for use within Accelerate programs

Larger programs

  • LULESH: Implementation of the Livermore Unstructured Lagrangian Explicit Shock Hydrodynamics proxy application.