[Haskell-cafe] Re: [Haskell] ANNOUNCE: Haskell 2010 Report (final)

[Simon Marlow]

On 15/07/2010 00:26, John Meacham wrote:
> On Wed, Jul 14, 2010 at 10:35:50AM +0100, Simon Marlow wrote:

>> http://portal.acm.org/citation.cfm?id=773044
>
> Ah, this paper looks very interesting, I was wondering if you had
> experimented with prefetching just ahead of the allocation pointer.
> Looks like it helped :)

It helped back then, but had to be finely tuned for each CPU.  I think 
automatic prefetching these days gets most of the benefit without any of 
the tuning or portability issues.  I experimented with other kinds of 
prefetching in the GC, but failed to find anything that worked reliably 
enough.

Cheers,
	Simon