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Developer Notes

If you like to hack Accelerate, and especially if you like to contribute changes back, please fork:

and send pull request with your changes. In your pull request, please describe the testing that you have performed.

In general, testing should involve both the interpreter and the CUDA backend (if you have got access to CUDA compatible hardware). A fairly comprehensive set of tests is available in the accelerate-examples package. This directory contains its own cabal-based build system. If you built Accelerate without the CUDA backend, you need to configure accelerate-examples with the additional option -f-cuda to disable testing of the CUDA backend.

Installing from source


  • Glasgow Haskell Compiler (GHC), version 7.8.3 or later
  • For the CUDA backend, CUDA version 5.0 or later
  • Haskell libraries as specified in the relevant cabal files

A standard source installation is to clone the individual repositories you are interested in, and add those to a local cabal sandbox. For example:

$ git clone
$ git clone
$ cabal sandbox init
$ cabal sandbox add-source accelerate accelerate-cuda
$ cabal install accelerate-cuda

New backends

If you are considering writing a new backend, you can do so in a separate, standalone package. The Accelerate frontend is entirely independent of any backend, and package accelerate exports all the necessary internals. If you run into problems, please contact the mailing list or github issues page for assistance.