Re: Multicore on Pi using pd~ object

I haven't looked at the test patch but I'm pretty sure the problem is 
that you didn't turn on DSP on the parent patch.

The reason is that [pd~] object is driven from the parent patch. This is 
also mentioned in the help patch:

"ATTENTION: DSP must be running in this process for the sub-process to 
start and run. This is because its clock is slaved to audio I/O it gets 
from us!"

Christof

On 10.10.2024 12:31, Yann Seznec wrote:
> Hello!
>
> I’m attempting to use the pd~ object for the first time on a Raspberry 
> Pi, with the idea of taking advantage of the multiple CPU cores.
>
> I’m using a Pi 3 with the latest 64bit “headless” OS, running Pd 
> 0.53.1 (installed via apt-get). My understanding is that using the pd~ 
> object should run each instance of a patch on a different core of the Pi.
>
> Here’s the test patch: https://github.com/yannseznec/multicoreTest
>
> On the command line, i'm attempting to run the "multiTest.pd" file 
> like so:
> pd -nogui multiTest.pd
>
> Pd launches and it gives me the message "pd~ version 0.54" but there 
> is no sound.
>
> Running only the subpatch (rand_osc.pd) produces a single sine tone as 
> expected.
>
> Am I using the pd~ object incorrectly, or misunderstanding something 
> about how this should all work?
>
> Thanks!
>
> Yann
>
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