[Haskell-cafe] GHC threaded runtimes and pure functions

[Andrew Coppin]

Gregory Propf wrote:
> That makes sense.  So maybe I should split my mapping into two 
> parallel ones or however many CPUs there are using par.
>

If you're going to use par, it doesn't really matter how many sparks you 
create. You just need to avoid creating millions of really tiny sparks. 
You could create, say, eight and let GHC figure out the rest itself...