Hemant Kapoor
Forum Replies Created
-
Hey Kevin,
Sorry for taking off there. I was away for some time. To answer your question, yes, CS3 also displays same behavior. I just cant seem to get more than 3-4 secs of ram preview no matter what combination of multi cpu / ram configuration I use.
-
Thanks for the response Kevin. Yes, In CS4 it does say 16 cpus available. I have try reducing the number of cpus and that doesnt seem to help. I did notice that this problem existed with a new project I recently started working on. This project has only one layer (footage) with keylight and some contrast/color correction applied. Funny part is that CS4 doesnt even disk cache for this particular project. I tried my older projects which had multiple layers and they seem to work fine with help from disk cache. I tried various combinations of cpu numbers and it all gives same 2-3 sec of ram preview. I’m seriously considering going back to my previous mac pro model.
-
Kevin,
You are bang on. I checked in CS3 version. The RAM Cahce size in indeed 1.8 GB. Allow me to explain the issue I am facing which got me investigating all this. I had MAc Pro 2.8 Ghz 2008 model with 16 GB of RAM. I could easily do long enough RAM previews. Recently I upgrade my machine to 2009 2.26 nehalem model. Now Ram previews cannot go above 2-3 seconds on a average. When I enable multiprocessing, the background RAM and total RAM usage in CS4 does increase. But neither does the foreground RAM increase ( which I believe is responsible for longer RAM previews, correct me if I’m wrong) nor does the total RAM usage for AE goes above 5 GB at the most. This is why I was trying to look for an option to increase foreground RAM size.
Now from what I understand more the amount of RAM I have longer RAM previews I can get. But I can clearly see that is not the case here. I still have 7 GB of RAM idling when RAM preview starts trailing.