[Linux-ia64] Re: web page on O(1) scheduler

Arjan van de Ven
2003-05-21T09:01:33Z

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On Wed, 2003-05-21 at 08:49, David Mosberger wrote:

>
> I think the web pages should be most relevant to the HPTC (high
> performance technical computing) community, since this is the
> community that is most likely affected by some of the performance
> oddities of the O(1) scheduler. Certainly anyone using OpenMP on
> Intel platforms (x86 and ia64) may want to take a look.

oh you mean the OpenMP broken behavior of calling sched_yield() in a
tight loop to implement spinlocks ?

I'd guess that instead of second guessing the runtime, they should use
the pthreads primitives which are the fastest for the platform one would
hope.. (eg futexes nowadays)

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