leoA4D Posted May 11, 2006 Share Posted May 11, 2006 I'll be curious to see what you come up with. While I can only dream of having as much computing power as you have(!), I appreciate you sharing your findings with us. Ditto here. Thx. Link to comment Share on other sites More sharing options...
Devin Johnston Posted May 11, 2006 Author Share Posted May 11, 2006 Well I was hoping to post something but unfortunately out of 80 machines I was only able to salvage 45 usable MXI files. I suspect that because there is no HD function any longer machines with less than 2GB can't render out high res scenes. Looks like I’ve reached my limit until that feature is enables, which means I can only produce one high rez image per night, not exactly what I was expecting. I’m going to try combinations of different numbers of computers to see what the minimum number of nodes I need to render over night really is. Link to comment Share on other sites More sharing options...
_PopArt Posted May 11, 2006 Share Posted May 11, 2006 the -hd function will be very useful once its back again, but wont everything become much slower with -hd? i remember some tests that were very slowing doing high res with the -hd option Link to comment Share on other sites More sharing options...
Devin Johnston Posted May 11, 2006 Author Share Posted May 11, 2006 Ok I've compared the noise levels on 4 different groups of nodes and it's pretty apparent that the biggest gains in noise reduction occur between 10 & 30 render nodes. When I compared the noise difference between 30 & 45 nodes the gain was almost unnoticeable but once I get all of my machines up and working I plan on doing a test with 100 nodes to see if there is any large difference in noise reduction. My conclusion is that 25-30 render nodes would be the most beneficial use of resources when using cooperative rendering in a 13 hour or less time frame. I know the HD option is a little slower just because of the paging that is going on and the relative slowness of the hard drive compared to RAM. Well have to see how this affects cooperative rendering. Link to comment Share on other sites More sharing options...
jackb602 Posted May 11, 2006 Share Posted May 11, 2006 Does each of your nodes have a single core processor? I wonder if, for example, 28 nodes would produce the same result as seven quad-core nodes? Link to comment Share on other sites More sharing options...
Devin Johnston Posted May 11, 2006 Author Share Posted May 11, 2006 They are a mix of single and dual core processors of both Intel and AMD but I'm pretty sure that 7 quad cores could do the same thing. Link to comment Share on other sites More sharing options...
AdamT Posted May 11, 2006 Share Posted May 11, 2006 It's not surprising. Adding nodes is just like adding levels--the benefit *for a particular frame* diminishes geometrically. In other words, once you get up to level 27 (for example), it would take a single computer 100 years to get to level 28. If you have a 100 nodes rendering it would still take 1+ year. OTOH, more nodes should help you get to that "still sort of noisy but okay" stage a lot faster. If net rednering was more user friendly you might even be able to knock out some animations, albeit with a flimgrain look. Link to comment Share on other sites More sharing options...
Ernest Burden III Posted May 12, 2006 Share Posted May 12, 2006 If net rednering was more user friendly you might even be able to knock out some animations, albeit with a flimgrain look. That's what I do! But not with Maxwell, I add grain in post. That was part of why I wasn't so worried about the noisy process of Maxwell. What I didn't factor in was NextLimit. The noise I can deal with... Link to comment Share on other sites More sharing options...
AdamT Posted May 12, 2006 Share Posted May 12, 2006 That's what I do! But not with Maxwell, I add grain in post. That was part of why I wasn't so worried about the noisy process of Maxwell. What I didn't factor in was NextLimit. The noise I can deal with... That, and you still need 30-40 nodes. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now