Subject: Re: [Kino-dev] x86-64 support
From: Dan Dennedy <dan@...>
To: Georg Ostertag <georg@...>
Cc: kino-dev <kino-dev@...>
Date: Tue, 26 Oct 2004 22:24:10 -0400
On Tue, 2004-10-26 at 22:24:10 -0400, Dan Dennedy wrote:
> On Tue, 2004-10-26 at 22:19 +0200, Georg Ostertag wrote:
> > Yes, it compiles on x86_64 (cvs checkout from today). And kino > =20
> > compiles also fine with it.
> > And hey, loading the scenes of an existing project (SMIL) file
> > needs about 3-4 seconds (estimated) with the old
> > libdv-0.103, and less than 1 second with the recent libdv.
> excellent. I already deleted your original email.. are you on intel > =20
> amd? we still need an intel test.
Today I compiled libdv-cvs-2004-10-26 on three 64bit platforms
and ran playdv with pond.dv:
Dual AMD Opteron 2.2GHz
compiles, playdv uses about 16% CPU, framerate fine.
Dual Intel Xeon 3.2GHz with EM64T extension (x86_64 instruction set):
compiles, playdv uses about 13% CPU, framerate fine.
Dual Itanium 2 1.6 GHz
compiles, playdv uses 50% CPU (on complete CPU), framerate bad.
All three machines are running RedHat Enterprise Linux 3.0.
I think, the result is not surprising. The Opteron and the
Xeon-EM64T are almost fully binary comatible as far as I know.
They are running the identical OS in this case, only the kernel as
The Itanium is worse, as there is no asm optimization for it...?