Hi -
If you have a fixed point version of your app available, that's
probably the best alternative.
If not (much more likely), you can look into softfloat for a big FP
improvement: a factor of 15 in whetstone tests to a factor of 20 in
FFTW tests.
Of course, moving to eabi is not trivial at this point, and is left as
an exercise for the reader as they say :). But the speedup available
can make the difference in the board working for the app you need or
not ....
Regards, ...... Charlie
--- In "Breton M. Saunders"
<> wrote:
>
> Oh yea, forgot to mention:
> I needed a EP9302 to play mp3s.
> Using mpg123 (a floating point heavy program) - the performance was
> about 5x slower than realtime.
> Using madplay (a fixed point program) the performace was about 30%
> load while playing in stereo.
>
> -Brett
>
> David Topper wrote:
> > Yeah, it uses floats all over the place. Interesting,
> > that would explain why I had to fall back to a two
> > year old version of the app (less use of floats).
> >
> > So the processor emulates FP math? How can I get the
> > FPU to work?
> >
> > Thanks,
> >
> > DT
> >
> > --- "Breton M. Saunders"
> > <> wrote:
> >
> >
> >> Check that it doesn't use floating point math.
> >> If it does, you are in trouble. You could try
> >> getting the FPU on the
> >> ARM9 to work, but that won't be easy.
> >>
> >> -Brett
> >>
> >>
> >> djtopper wrote:
> >>
> >>> Hi folks,
> >>>
> >>> I've been working getting an audio app
> >>>
> >> (www.rtcmix.org) to compile for
> >>
> >>> the TS-7xx boards. I think I've finally got it
> >>>
> >> working, using the
> >>
> >>> ALSA libraries, etc... I can definitely play
> >>>
> >> soundfiles through my
> >>
> >>> little USB dongle.
> >>>
> >>> I'm noticing, however, that for basic synthesis
> >>>
> >> (eg., making a sine
> >>
> >>> wave) the board is far too slow). I mean, I can
> >>>
> >> barely get one
> >>
> >>> oscillator going.
> >>>
> >>> I used to be able to get about a dozen or so on my
> >>>
> >> old 90 mhz Pentium.
> >>
> >>> What's the deal with the ARM processor and speed?
> >>>
> >>> Thanks,
> >>>
> >>> DT
> >>>
> >>>
> >>>
> >>>
> >>> Yahoo! Groups Links
> >>>
> >>>
> >>>
> >>>
> >>>
> >>
> >
> >
> >
> >
> >
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> > Yahoo! Groups Links
> >
> >
> >
> >
>
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