AE max amount of RAM per core

[Stefan Scherperel]

So I just hand built a new editing workstation and I'm having some great results with AE and C4D Render times, but I feel there is more I can get out of it if I could allow more RAM per core on really heavy VFX shots. I ask this question on REDuser because it seems to be more of an issue with R3D files, than the standard user.
System
Intel 3930K OC'ed to 4.5GHZ, water cooled.
64GB RAM
Dedicated SSD Bootup and SSD Cache drive

Here is my problem. One of the renders I am working one has tons of of layers of R3D files, so we are talking major RAM hog.
I have Multi Processing setup to 6GB RAM per core, using 8 of 12 Cores Available.
About half way through the render AE runs out of RAM and switches to Frame by frame rendering - Boo
So I'm trying to figure out why I can't set more than 6GB of RAM per Core?
I know that I wouldn't be able to do 8GB RAM for 8Cores, as I would not have any leftover, but I'm thining I may be able to maximize this particular render at 8GB X 6 Cores. Does anybody know why this is not an option?

Don't me wrong, I'm very happy with the performance as it is, going from my last workstation to this one, I'm going from 2HR 45Min render for this same timeline to just under an hour. Maybe I'm just getting greedy.

Edit
Note, just set the same render to 4GB per core and it seems to be running all the way through now without maxing out Memory. Maybe I just don't understand the math of the situation as well as I thought.

 

[Stefan Scherperel]

Well at about 40min into the render it went back down to frame by frame rendering. Not the end of the world, but hey, if it weren't for render times, sometimes I wonder if I would even have a life at all!

 

[D Fuller]

I don't know the answer to your question, but if it were me, I'd render to tiff files or DPX files so that I could stop and restart the render when it runs out of RAM without losing anything. It'd be lossless, and its very quick to re-render to your desired output format from the tiffs.

 

[Sarah C.]

Orson Welles' Magnificent Ambersons(1942):

"Too slow for us nowadays, because the faster we're carried, the less time we have to spare."

 

[Stefan Scherperel]

Good call David, that''s a great Idea.

 

[Frank Cueto]

Go to the secret preferences (hold shift+ctrl+alt while selecting the preference menu) from there check the box to empty the ram every frame. Problem solved

 

[Stefan Scherperel]

Thanks Frank. It's funny I had actually used the secret preferences a long time ago on a render that I was having issues with, but I totally forgot about that setting. This works perfectly!