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Re: RT Kernel

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On 08/01/2021 11:42, Deloptes wrote:
> Folderol wrote:
> 
>> Even on an old eeePC900 by adjusting the priorities I can see the audio
>> and interface threads are running on different cores, so with modern high
>> count CPU cores, and GPUs the distinction is becoming moot. I don't know
>> how to do it myself, but a *lot* of audio processing is very simple
>> parallel operations - the thing that GPUs excel at!
> 
> do you mean that it were be better using the GPU for time sensitive
> operations?
> 
I think what he means is that a *lot* of audio processing - and that is 
essentially complex digital filtering - is very simple parallel operations.
I wrote quite a lot of it for fun - essentially the biggest CPU chewers 
for me were reverberators - loads of different delays multiplied by 
constant factors and added together (or subtracted).

Actually I am not sure how that would sit in parallel cores - I suppose 
you would do partial results. The problem is of course that you need to 
access the same delay line in memory for all cores, and its actually 
those accesses that take the cycles. Assuming you have a fast floating 
point multiplym anyway.


-- 
Canada is all right really, though not for the whole weekend.

"Saki"

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RT Kernel Folderol <general@musically.me.uk> - 2021-01-07 17:26 +0000
  Re: RT Kernel Jim Jackson <jj@franjam.org.uk> - 2021-01-07 19:55 +0000
    Re: RT Kernel Folderol <general@musically.me.uk> - 2021-01-07 20:27 +0000
      Re: RT Kernel Jim Jackson <jj@franjam.org.uk> - 2021-01-07 20:35 +0000
        Re: RT Kernel Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-08 06:55 +0000
          Re: RT Kernel Deloptes <deloptes@gmail.com> - 2021-01-08 09:56 +0100
            Re: RT Kernel Ahem A Rivet's Shot <steveo@eircom.net> - 2021-01-08 09:27 +0000
              Re: RT Kernel Folderol <general@musically.me.uk> - 2021-01-08 11:16 +0000
                Re: RT Kernel Deloptes <deloptes@gmail.com> - 2021-01-08 12:42 +0100
                Re: RT Kernel The Natural Philosopher <tnp@invalid.invalid> - 2021-01-08 13:10 +0000
                Re: RT Kernel Folderol <general@musically.me.uk> - 2021-01-08 16:28 +0000
              Re: RT Kernel Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-01-08 18:06 +0000
            Re: RT Kernel nospam.Richard.Falken@f1.n770.z6534.fidonet.org (Richard Falken) - 2021-01-08 10:49 +1300
            Re: RT Kernel Jim Jackson <jj@franjam.org.uk> - 2021-01-08 18:06 +0000
            Re: RT Kernel Scott Alfter <scott@alfter.diespammersdie.us> - 2021-01-08 20:18 +0000
              Re: RT Kernel Deloptes <deloptes@gmail.com> - 2021-01-08 21:36 +0100
                Re: RT Kernel Scott Alfter <scott@alfter.diespammersdie.us> - 2021-01-10 22:28 +0000
              Re: RT Kernel not@telling.you.invalid (Computer Nerd Kev) - 2021-01-08 23:54 +0000
  Re: RT Kernel Martin Gregorie <martin@mydomain.invalid> - 2021-01-07 21:56 +0000
    Re: RT Kernel Folderol <general@musically.me.uk> - 2021-01-07 22:25 +0000
      Re: RT Kernel Martin Gregorie <martin@mydomain.invalid> - 2021-01-07 23:37 +0000
        Re: RT Kernel Folderol <general@musically.me.uk> - 2021-01-08 10:35 +0000
          Re: RT Kernel Martin Gregorie <martin@mydomain.invalid> - 2021-01-08 11:31 +0000
  Re: RT Kernel druck <news@druck.org.uk> - 2021-01-08 20:40 +0000
    Re: RT Kernel Folderol <general@musically.me.uk> - 2021-01-09 09:45 +0000
  Re: RT Kernel not@telling.you.invalid (Computer Nerd Kev) - 2021-01-08 23:38 +0000
    Re: RT Kernel Folderol <general@musically.me.uk> - 2021-01-09 10:05 +0000
      Re: RT Kernel Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-09 17:16 -0500
  Re: RT Kernel Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-08 22:54 -0500

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