[Haskell-cafe] Threading and Mullticore Computation

Brandon S. Allbery KF8NH allbery at ece.cmu.edu
Tue Mar 3 12:38:31 EST 2009

On 2009 Mar 3, at 12:31, mwinter at brocku.ca wrote:
> In both runs the same computations are done (sequentially resp.
> parallel), so the gc should be the same. But still using 2 cores is
> much slower than using 1 core (same program - no communication).

The same GCs are done, but GC has to be done on a single core  
(currently; parallel GC is in development) so you will see a lot more  
lock contention when the GC kicks in.

brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allbery at kf8nh.com
system administrator [openafs,heimdal,too many hats] allbery at ece.cmu.edu
electrical and computer engineering, carnegie mellon university    KF8NH

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