Got sidetracked there...
Configuration fails: The required jack >=0.118.3 with session support
was not found. I'm unlikely to fix that for the moment.
James.
On 8 July 2010 03:11, cal <cal@email-addr-hidden> wrote:
> On 07/07/10 18:42, James Morris wrote:
>>
>> Hi,
>>
>> Yoshimi 0.58 crashes when loading a padsynth instrument from instrument
>> menu.
>>
>> The attached instrument fails, as does a simple test instrument with
>> default params.
>
> hi James, well that turned out to be more interesting than a boring little
> deadlock. With plinky-plank's sample-quality->samplesize of 5, it sets about
> prepping an fft plan on 512K, and any way you go about that I figure that's
> going to take a finite chunk of time. My terminology use here is no doubt
> way
> off, I don't pretend to understand as much as I'd like on the subject of fft
> processing.
>
> The "problem" was that somewhere way back there I switched the planner flag
> from FFTW_ESTIMATE to FFTW_MEASURE, and as the docs put it, "FFTW_MEASURE
> tells FFTW to find an optimized plan by actually computing several FFTs and
> measuring their execution time. Depending on your machine, this can take
> some
> time (often a few seconds)". On my AMD250/4G ram, plinky-plank took all of
> 1'24" to come to life. And wasn't it worth the wait!
>
> By switching the planner flag back to FFTW_ESTIMATE, things happen a whole
> lot
> quicker. This one is just further evidence that when it comes to the core
> synth stuff, Paul (original zyn author) actually knew what he was doing, and
> every time I've tried to vary things in that area I've stuffed it up! I
> think
> this little item might also account for comments along the way that
> instrument
> loading in general was taking longer than it used to.
>
> And so there's ...
> 0.059-pre2 switch fftw planner flag from FFTW_MEASURE back to FFTW_ESTIMATE,
> enabling plinky-plank to load in realistic time.
>
> Let me know if it works for you,
> <http://www.graggrag.com/yoshimi/yoshimi-0.059-pre2.tar.bz2>
>
> cheers, Cal
>
>
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Received on Thu Jul 8 12:15:01 2010
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