Hello Boris,

in my experience QuartzComposer does all the graphics processing in the GPU not 
in the CPU. If your RAM goes up, this is usually caused by the inputs you are 
using. E.g. a H264 video has a big memory footprint. Can you describe in more 
detail, what your composition does and what sources are you using? What does 
"suddenly" mean to you (after certain seconds, randomly)?

best,

Achim Breidenbach
Boinx Software

On 27.03.2012, at 08:42, Boris Rousseau wrote:

> Hello,
> 
> I am facing a memory leak while using Quartz Composer to process and generate 
> videos.
> Quartz Composer starts processing the video in HD starting from 700Mb and 
> suddenly raises over the RAM limit until the Mac Pro swaps.
> Apparently, the issue is probably link to Core Image processing while 
> converting or rescaling images to HD but I am not sure about it.
> 
> Did anyone already have this problem, please ?
> How do I debug Quartz Composer memory leak, please ?
> 
> Thanks for your help.
> 
> -- 
> Boris Rousseau
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