Date: Tue, 3 May 2005 16:00:29 +0200 From: Marc Olzheim <marcolz@stack.nl> To: Daniel Eischen <deischen@freebsd.org> Cc: freebsd-threads@freebsd.org Subject: Re: Floating point exceptions with -pthread Message-ID: <20050503140029.GE66132@stack.nl> In-Reply-To: <Pine.GSO.4.43.0505030953170.22622-100000@sea.ntplx.net> References: <20050503110818.GA66132@stack.nl> <Pine.GSO.4.43.0505030953170.22622-100000@sea.ntplx.net>
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--SWTRyWv/ijrBap1m Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, May 03, 2005 at 09:54:23AM -0400, Daniel Eischen wrote: > > Hi. > > > > I was wondering whether it was safe to use floating point calculations / > > libm functions with 5.4-STABLE's pthread library on HT+SMP. I keep > > getting floating point exceptions on places where they should not > > happen... :-( >=20 > Yes, it should work fine. If you can verify the problem exists > (or doesn't) on -current, that might help. It sounds like FPU > context isn't getting saved/restored correctly in the kernel. I don't have a -current machine with HyperThreading... :-/ But I mailed a test program in a different thread; perhaps somebody else is willing to run it... Marc --SWTRyWv/ijrBap1m Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQFCd4P9ezjnobFOgrERAgnkAJ9S+DA362TIorIJyK+TAm3bOPfWoACffSxr 4Jq7lrs3e3xIllXtPgMZ4Fg= =UzGI -----END PGP SIGNATURE----- --SWTRyWv/ijrBap1m--
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