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Re: [Discuss-gnuradio] [Fwd: [FFTW-announce] FFTW 3.2-alpha2 is availabl
From: |
Joshua Lackey |
Subject: |
Re: [Discuss-gnuradio] [Fwd: [FFTW-announce] FFTW 3.2-alpha2 is available, Cell support, MPI] |
Date: |
Tue, 20 Mar 2007 15:11:13 -0800 |
User-agent: |
Mutt/1.2.5.1i |
Quoting Eric Blossom (address@hidden):
> On Mon, Mar 19, 2007 at 06:41:16PM +0100, Marcus Leech wrote:
> > Matt Ettus wrote:
> > >
> > >This bodes well for cell support...
> > On a related subject, FFTW supports multi-threaded FFTs. Is there
> > support for that in Gnu Radio yet,
> > perhaps enabled automatically if it's running on a multi-CPU system?
>
> No support for it at this point.
I played around with FFTW's support of multi-threaded FFTs on a
dual-proc (not dual-core) machine a few years ago. It was slower unless
you were doing a transform with 100,000 points or so. (Or thereabouts.)
Unless things have changed drastically, it was rather dissapointing and,
obviously, not worth it.
>
> Feel free to try it out :)
>
> Eric
>
>
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> Discuss-gnuradio mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
--
Joshua Lackey, PhD. -- address@hidden
- [Discuss-gnuradio] [Fwd: [FFTW-announce] FFTW 3.2-alpha2 is available, Cell support, MPI], Matt Ettus, 2007/03/19
- Re: [Discuss-gnuradio] [Fwd: [FFTW-announce] FFTW 3.2-alpha2 is available, Cell support, MPI], Marcus Leech, 2007/03/19
- Re: [Discuss-gnuradio] [Fwd: [FFTW-announce] FFTW 3.2-alpha2 is available, Cell support, MPI], Chris Stankevitz, 2007/03/19
- Re: [Discuss-gnuradio] [Fwd: [FFTW-announce] FFTW 3.2-alpha2 is available, Cell support, MPI], Eric Blossom, 2007/03/20
- Re: [Discuss-gnuradio] [Fwd: [FFTW-announce] FFTW 3.2-alpha2 is available, Cell support, MPI],
Joshua Lackey <=
- Re: [Discuss-gnuradio] [Fwd: [FFTW-announce] FFTW 3.2-alpha2 is available, Cell support, MPI], Martin Dvh, 2007/03/19