[PD] Maximum output number
IOhannes m zmoelnig
zmoelnig at iem.at
Thu Jan 22 14:16:53 CET 2009
> I think it's a technical limit of Pd... I've Pd vanilla 0.41.4 compiled
> by me on GNU/Linux, If i tried to set 48 chan. I got
> mbutu at mbutuarch ~]$ /usr/bin/pd
> 48 output ports not supported, setting to 32
> pd_gui: pd process exited
> Segmentation fault
> So i think you need more instances of Pd.
we are using Pd successfully with 64 channels.
usually with alsa as backend.
the jack-backend of Pd is buggy and only supports 32 channels. it will
also crash if you are setting higher numbers of channels.
i have once posted a bugfix for this to the patch-tracker that raises
the maximum number of channels to 1024, but people reported problems
just yesterday i have done tests with jack and 64 channels (with a
modified patch applied, the modification was to reduce the number of
channels to 256, iirc), and had no problems at all.
according to jack, i was down to 2.5ms, and i _measured_ a latency of
there might as well be problems with OSS and higher number of channels
(hidden within the depths of OSS)
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