From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arjan van de Ven Date: Wed, 21 May 2003 09:01:33 +0000 Subject: [Linux-ia64] Re: web page on O(1) scheduler MIME-Version: 1 Content-Type: multipart/mixed; boundary="=-jdn4kkStXG9zAFTHIY0R" Message-Id: List-Id: To: linux-ia64@vger.kernel.org --=-jdn4kkStXG9zAFTHIY0R Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Wed, 2003-05-21 at 08:49, David Mosberger wrote: >=20 > 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) --=-jdn4kkStXG9zAFTHIY0R Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.2 (GNU/Linux) iD8DBQA+y0BsxULwo51rQBIRArOMAJ9yAk3Z9IroEHYebopZJURFBSCi6ACgny4i qyZcXObrE3j3F9UpJ3B1uEo= =l5W7 -----END PGP SIGNATURE----- --=-jdn4kkStXG9zAFTHIY0R--