Mailing List AE-List@media-motion.tv � Message #54626
From: Teddy Gage <AE-List@media-motion.tv>
Subject: Re: [AE] Render Multiple Frames Simultaneously (MP option) problem
Date: Sat, 19 Jul 2014 14:18:22 -0400
To: After Effects Mail List <AE-List@media-motion.tv>
 Message Header

Undecoded Message
How big is your hard drive cache set? What kind of drive is it on? SSD or HDD? Also does it work as expected with RMFS turned off?

Here is what I think your problem is, your machine is starved for RAM - with dual hex CPUs that's 12 physical cores (or 24 virtual!!) chewing through RAM - I have a 3930K (single hex) and I had to upgrade to 64GB RAM to get decent preview length at full resolution in 1080p

couple things you can try:

- try lowering amount of RAM per core in MP settings (to 1 or 2 GB per)
- Try previewing at lower res (third or quarter)
- turn OFF hyperthreading on your CPUS in the BIOS OR limit AE to use 6 or 12 CPUS in MP settings
- buy more ram. Honestly I would suggest 128 GB minimum for your setup



On Sat, Jul 19, 2014 at 1:40 PM, Dirk de Jong <AE-List@media-motion.tv> wrote:
I'm working on a new machine and I have been encountering a problem I haven't been able to solve and so I'm seeking more info and suggestions on it.

I'm working on some heavy comps and trying to take advantage of the Render Multiple Frames Simultaneously (hereafter referred to as RMFS) option. It works great in helping me build PTRs much more quickly - BUT - the problem is that with RMFS enabled after building a PTR as soon as I stop the loop playback it seems to lose the PTR that it has built - the green line in the timeline preview region disappears and if I try to play my PTR again it will need to rebuild it again even though no changes have been made to the comp. Cached frames created by stepping around the timeline or "normal" space bar playback persist as expected.

I've read some Help doc and watched Todd's explanation of the feature on video2brain, and I've tried various combinations of RMFS settings and made sure to leave adequate RAM for other applications etc. but I can't seem to get the PTR cache to persist if I use RMFS for my PTR. I've tried much more basic test comps to try to rule out any specific source media or plugins etc. but so far I cannot isolate it any further than previously described here.

I'm hoping that this is not just a fact of life... I did notice that there is a pref option for using RMFS only for render queue and not PTR...

Any insight or suggestions are much appreciated. Thanks.

AE CC 2014
Win7 Professional
32 GB Ram
dual hex core Xeon CPUs




--
_____________________________
VFX & Motion Graphic Artist
teddygage dot com
 
Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to ListMaster