[PD] GEM on Raspberry Pi

Fede Camara Halac camarafede at gmail.com
Sun Dec 10 23:04:24 CET 2017

Hi Jim,

I dont have a very clear log of what i did. But mainly I compiled pd and Gem from git, fetching all dependencies in pd's INSTALL.txt instructions and (I think) Gem's dependencies from either a debian package or looking into old puredata.info entries on Gem's dependencies. I dont remember id there is a Gem package already. There is no need for compiling Pd, but I think you need to compile Gem. Please, anyone correct me if I'm wrong!




> On Dec 10, 2017, at 2:23 PM, Jim Ruxton <jim.ruxton at gmail.com> wrote:
> Frederico, I'm curious if you just installed PD via a repository on the Pi3 or downloaded a special version of PD compiled for the Pi. Did you install Gem separately or use a version that came bundled with the PD you used ?
> Thanks,
> Jim
>> Hello,
>> I have tried Gem on the Pi3 and it works. I did not try Gem *completely*
>> because I had no time, but did not encounter major issues other than video
>> capture. I could not use video capture since it overworked the CPU.
>> However, accessing the video feed with openCV (not through Gem) gave *very*
>> reasonable CPU usage (while doing Face Tracking, for example). I am not
>> sure why I encountered such a difference, but I just couldn't use Gem for
>> *that*.
>> Cheers,
>> Fede
>>> On Sat, Dec 9, 2017 at 4:01 PM, IOhannes m zmölnig <zmoelnig at iem.at> wrote:
>>>> On 12/09/2017 09:36 PM, Jim Ruxton wrote:
>>>> I am wondering what is the current best option of using Gem on the Pi 3.
>>>> Would I be best to use Purr Data?
>>>> or Vanilla PD?
>>> i think this is the wrong question.
>>> Gem on the rpi is kind of limited as it (Gem) depends on openGL and the
>>> rpi provides openGL-ES (though there *are* experimental (still?) drivers
>>> for openGL as well).
>>> this is quite independent of purr data, pd-vanilla or whatever.
>>> gfmdasr
>>> IOhannes

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