Parallel

Parallelism and Concurrency in Haskell

Getting started

Haskell supports both pure parallelism and explicit concurrency. How would you like to begin?

1. Speed up your code by making it run on multicore:

   Start with Control.Parallel (pseq, par) and refine with Strategies

2. Manage simultaneous IO actions (eg. multiple connections on a web server)

   Start with Concurrent Haskell (forkIO, MVar)

3. Work with clusters or do distributed programming

   Distributed programming is still ongoing research. See below for current efforts.

   In the meantime, you could use the Haskell MPI bindings, which use Concurrent Haskell and the MPI library.

Community

• The parallel-haskell mailing list
• Follow @parallelhaskell on Twitter
• StackOverflow on Haskell parallelism and concurrency

Tools

• Threadscope - parallel programs not getting faster? Use the Threadscope debugger and watch sparks fly.
• Comprehensive list of Parallelism and Concurrency libraries

Documentation

• Parallel Haskell reading
• Research papers on parallelism and concurrency

Tips and tutorials

• Concurrency performance