[Haskell-cafe] Re: no sparks?
cantthinkthinkpink at gmail.com
Sun Dec 20 18:07:21 EST 2009
I did compile with -threaded.
On Sun, Dec 20, 2009 at 5:42 PM, Maciej Piechotka <uzytkownik2 at gmail.com>wrote:
> On Sun, 2009-12-20 at 17:25 -0500, Jamie Morgenstern wrote:
> > Hello;
> > I am writing a parallel theorem prover using Haskell, and I am trying
> > to do several things. As a first cut, I want to try using the par
> > construct
> > to attempt right and left rules simultaneously, and to evaluate both
> > branches of an and clause in parallel. My code (attached) does not
> > seem
> > to generate sparks, however. When I run
> > ./proposition +RTS -N2 -sstderr
> > I get that no sparks are created. What am I doing wrong?
> > Also, I was wondering if something akin to a "parallel or" exists. By
> > this, I mean I am looking for a function which, given x : a , y : a,
> > returns
> > either, whichever computation returns first. Can I use strategies to
> > code up something like this?
> > I suppose this doesn't play nicely with the idea of determinism, but
> > thought it might be worth asking
> > anyway.
> > Thanks,
> > -Jamie
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