Parallel

Parallelism and Concurrency in Haskell

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 (par, pseq) and refine with Strategies

   Find out more about parallelism basics

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

   Start with Concurrent Haskell (forkIO, MVar)

   Find out more about concurrency basics

3. Work with clusters or do distributed programming

   Learn about concurrency first, then try using network protocol libraries like HTTP or zeromq.

   Meanwhile look out for ongoing research into distributed Haskell.

Community

• Ask questions on Haskell Cafe
• See what parallel-haskell researchers and developers are working on
• Get the latest from the Parallel GHC Project
• Follow @parallelhaskell on Twitter
• StackOverflow on Haskell parallelism and concurrency

News

• 2012-04-20 Parallel Haskell Digest 9
• 2012-03-02 Parallel Haskell Digest 8
• 2011-12-24 Parallel Haskell Digest 7
• 2011-11-21 Job Opportunity at Parallel Scientific

Tools

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

Documentation

• Glossary
• Parallel Haskell reading
• Current research
• Parallel and Concurrent Programming in Haskell (online book)