From: Arjan van de Ven <arjanv@redhat.com>
To: davidm@hpl.hp.com
Cc: linux-kernel@vger.kernel.org, linux-ia64@linuxia64.org
Subject: Re: web page on O(1) scheduler
Date: 21 May 2003 11:01:33 +0200 [thread overview]
Message-ID: <1053507692.1301.1.camel@laptop.fenrus.com> (raw)
In-Reply-To: <16075.8557.309002.866895@napali.hpl.hp.com>
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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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next prev parent reply other threads:[~2003-05-21 8:49 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-21 6:49 David Mosberger
2003-05-21 9:01 ` Arjan van de Ven [this message]
2003-05-21 10:40 ` [Linux-ia64] " Duraid Madina
2003-05-21 10:43 ` Christoph Hellwig
2003-05-21 13:12 ` Arjan van de Ven
2003-05-21 13:51 ` Olivier Galibert
2003-05-28 22:12 ` Bill Davidsen
[not found] ` <Pine.LNX.3.96.1030528180909.21414B-100000@gatekeeper.tmr.c om>
2003-05-29 5:59 ` Mike Galbraith
2003-06-02 8:05 ` Ingo Molnar
2003-06-04 4:07 ` Bill Davidsen
[not found] ` <Pine.LNX.4.44.0306020949520.3375-100000@localhost.localdom ain>
2003-06-02 13:51 ` Mike Galbraith
2003-06-04 3:52 ` Bill Davidsen
2003-06-04 4:55 ` David Schwartz
[not found] ` <Pine.LNX.3.96.1030603234616.16495B-100000@gatekeeper.tmr.c om>
2003-06-04 7:13 ` Mike Galbraith
2003-06-04 15:30 ` Jan Harkes
2003-05-21 19:18 ` Duraid Madina
2003-05-21 20:03 ` Helge Hafting
2003-05-21 22:59 ` Alan Cox
2003-05-21 15:18 ` David Mosberger
2003-05-23 1:07 ` [Linux-ia64] " Hans Boehm
2003-05-23 8:30 ` Arjan van de Ven
2003-05-21 9:26 ` Mike Galbraith
2003-05-21 9:30 ` Mike Galbraith
2003-05-21 17:56 ` David Mosberger
2003-05-21 20:46 ` Mike Galbraith
2003-05-22 9:52 ` Mike Galbraith
2003-05-22 16:25 ` Mike Galbraith
2003-05-22 17:58 ` David Mosberger
2003-05-27 15:16 ` [case closed] " Mike Galbraith
2003-06-03 20:59 ` sched.c gives ICE [Was: Re: web page on O(1) scheduler] J.A. Magallon
2003-06-03 22:29 ` Mike Galbraith
2003-06-22 22:03 ` J.A. Magallon
2003-06-22 22:10 ` J.A. Magallon
2003-05-22 0:38 ` web page on O(1) scheduler Rik van Riel
[not found] ` <Pine.LNX.4.50L.0305212038120.5425-100000@imladris.surriel. com>
2003-05-22 5:52 ` Mike Galbraith
2003-05-22 14:47 ` Valdis.Kletnieks
2003-05-22 16:12 ` Mike Galbraith
2003-05-25 9:17 ` Mike Galbraith
2003-05-21 18:31 ` [Linux-ia64] " David Mosberger
2003-05-21 20:00 ` Cyclades Cyclom-Y ISA on 2.5.69 John Stoffel
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