[Haskell-cafe] Re: Problem getting code from AFP08 parallel tutorial to run in parallel

Simon Marlow marlowsd at gmail.com
Wed Nov 26 04:13:53 EST 2008

Don Stewart wrote:
> olivier.boudry:
>> On Tue, Nov 25, 2008 at 3:07 PM, Simon Marlow <marlowsd at gmail.com> wrote:
>>> Yes, it's a scheduling bug.  I'll make sure it gets fixed for 6.10.2.  If
>>> you have more sparks then you shouldn't see this problem.  Also, GHC HEAD is
>>> quite a lot better with parallel programs than 6.10.1, I'll try to get
>>> around to posting some figures sometime.
>> Yes, I tried it with 3 sparks and it works,
>> Thanks for your help,
> What does the code look like?
> Simon : should we be start to try tthe HEAD for par stuff?

Please do - also I'm on the lookout for good benchmarks to add to 
nofib/parallel.  Particularly programs that you think should speed up in 
parallel but don't - sometimes that helps us find bottlenecks in the runtime.


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