Re: [LAD] opencl [was Re: [LAU] ANN: CMKeyboard]

Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]
To: Paul Davis <paul@...>
Cc: linux-audio-dev@lists.linuxaudio.org <linux-audio-dev@...>
Date: Monday, December 10, 2012 - 4:33 pm

--=-ePDLHYR4ifxgX+MgpQGs
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

On Mon, 2012-12-10 at 11:12 -0500, Paul Davis wrote:

e
e
e
d

Indeed. Crazy throughput, but transferring to and from the GPU kills
you. Worth investigating anyway since many-core is probably going to
stick around and become faster, but I doubt current GPUs can achieve
reasonable real-time audio latency.

I think the programmable GPUs on recent Intel chips (Ivy Bridge) is an
interesting development; though much less powerful and far less cores,
they have full memory bandwidth (the other thing that kills you), and
presumably minimal latency since it's on-die. Adding 8 or so cores may
not be in the same realm as adding hundreds, but for many things the
latency and memory bandwidth dominates anyway so a billion cores on a
GPU would still be slower. Anything memory bound is much slower even on
the best GPUs. I'll happily take 8 extra cores on the CPU...

Unfortunately they're not programmable on Linux yet, only on Windows. A
complete joke if they're targeting scientific GPGPU, and useless for LAD
too. Intel seriously needs to get on this and fix their drivers...

-dr

--=-ePDLHYR4ifxgX+MgpQGs
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: This is a digitally signed message part
Content-Transfer-Encoding: 7bit

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
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=IT3Q
-----END PGP SIGNATURE-----

--=-ePDLHYR4ifxgX+MgpQGs--

Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]

Messages in current thread:
[LAD] opencl [was Re: [LAU] ANN: CMKeyboard], Patrick Shirkey, (Mon Dec 10, 3:57 pm)
Re: [LAD] opencl [was Re: [LAU] ANN: CMKeyboard], Bill Gribble, (Mon Dec 10, 4:33 pm)
Re: [LAD] opencl [was Re: [LAU] ANN: CMKeyboard], Patrick Shirkey, (Mon Dec 10, 11:25 pm)
Re: [LAD] opencl [was Re: [LAU] ANN: CMKeyboard], Paul Davis, (Mon Dec 10, 4:12 pm)
Re: [LAD] opencl [was Re: [LAU] ANN: CMKeyboard], David Robillard, (Mon Dec 10, 4:33 pm)
Re: [LAD] opencl [was Re: [LAU] ANN: CMKeyboard], Patrick Shirkey, (Mon Dec 10, 6:40 pm)
Re: [LAD] opencl [was Re: [LAU] ANN: CMKeyboard], David Robillard, (Mon Dec 10, 8:29 pm)
Re: [LAD] opencl [was Re: [LAU] ANN: CMKeyboard], Patrick Shirkey, (Mon Dec 10, 9:46 pm)
Re: [LAD] opencl [was Re: [LAU] ANN: CMKeyboard], Paul Davis, (Mon Dec 10, 6:46 pm)