[jitter] loading more than 2GB of matrixes?

On Sep 4, 2007, at 1:19 PM, evan.raskob [lists] wrote:

>> If you are trying a *loadram* message to jit.qt.movie it will also  
>> not load the RAM, if not crash. When you just open a file via  
>> read, it is not loaded into RAM. Perhaps this is the discrepancy  
>> you are seeing.
>
> Using Activity monitor, I load a ~5GB Quicktime file and don't see  
> a huge increase in RAM.  After next sending it a "loadram" message  
> I see RAM usage jump to ~16GB (on a 16GB RAM, Quad-processor Intel  
> Mac), and movie plays very well.  Unless there is something odd  
> with Activity Monitor, or that I missing something important,  
> doesn't this mean that entire 5GB of the movie is now in RAM?

Perhaps QT now has some ability to load into the RAM of another  
process, or on the fly RAM disk, or some other trickiness that I was  
unaware of. You might also be able to use a RAM disk to your  
advantage for read/writing matrices faster than to/from disk.

-Joshua