Richard Jones <rich@annexia.org> writes:

> On Mon, Sep 25, 2006 at 08:13:50AM -0400, Jacques Carette wrote:
>> Over on Haskell-cafe, Simon Peyton-Jones says:
>> "GHC 6.6 (release candidate available) supports parallel execution on 
>> SMP machines.
>> 
>> Garbage collection is not parallelised yet, something we plan to fix
>> this autumn."
>> 
>> A bit of competition is a good thing, isn't it?
>
> Can someone explain how/if this is better than using MPI for
> parallelism?  The reason I ask is that we are starting to use MPI for
> real on SMP machines to process our larger datasets.

I guess that with a working shared-memory SMP support, you
don't pay the communication cost you have with MPI.