[Haskell-cafe] Control.Parallel on 6.10.4 - Mac OS X version

Don Stewart dons at galois.com
Tue Aug 18 23:17:18 EDT 2009

> I'm using the Control.Parallel package on ghc version 6.10.4 and I don't seem
> to be getting any parallel threads or sparks created at all with the
> "-threaded" compilation option using runtime flags "+RTS -N2".  I'm using
> simple examples from the paper "A Tutorial on Parallel and Concurrent
> Programming in Haskell" by Jones and Singh.  
> I'm running on an Intel Mac core 2 duo.  Does anyone know how I can check if
> the parallel functionality in ghc is working on my 6.10.4 ghc package installed
> on this platform ? I installed it from the "supported" runtime pkg for OS X
> from the ghc website.

A simple parallel 'hello world'


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