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V-Ray DR Issues
show user profile  roseman5285
Hey guys,

So, here's the scoop. The guy who normally takes care of the rendering in the office is currently out of the country getting some stuff dealt with his visa, and I was asked to return to doing the visualization work for this proposal (yay!). I've been piddling away through VRay 1.5 SP6, set up a bunch of new and not-so-new computers for distributed rendering, which seem to be working.

Now, one of the little tests I've been conducting is to see if I can get all of the computers to behave. However...I am having a bit of an issue with the amount of buckets I see in the render window versus what should be there. By my count, I should have 108 buckets showing up (from a total of 7 computers) but what shows up in the render window really doesn't look like 108 buckets. All of the cores on the computers are being used, as they all bounce up to 100% usage.

I first started with just two of the computers (16 logical cores each[32 with hyper threading]) and that seemed to work fine, but when I added the other machines to the DR list, the render time didn't seem to decrease as much as I thought it would and it brought up some questions. A test animation of 300 frames ran for 2hrs 36mins with just two of the machines. When I added the others, that number only dropped to 2hrs 15mins.

So, TL;DR - Number of possible cores to be used does not equal number of cores that are shown as being used even though the cores are all showing as active.

Sorry for being long winded. I was going to post this in the Chaos Group forum, but I don't seem to have permissions to post after making an account. Also, glad to see this place still around...and still this lovely shade of green.


read 766 times
9/11/2012 10:33:15 PM (last edit: 9/11/2012 10:33:15 PM)
show user profile  donvella
Can you remote desktop into your render blades?

If you can, I would suggest you reset them all. Start a very large render, login to each machine and check that the spawner is running fresh (make sure if you have more then 1 3dsmax installed, then the spawner for that version is running and not the previous version).

Start the spawner and watch for additional buckets, then do this to the next blade. If you consistantly add to your buckets then you should be able to single out which machines are not rendering.

While your rendering make sure you take note of which machine is responsible for which bucket number (they should be assigned by machine not core).

read 745 times
9/12/2012 10:27:50 AM (last edit: 9/12/2012 10:27:50 AM)
show user profile  roseman5285
Thanks for the response.

Right now it does show that all of the machines are rendering. Each one does have buckets attributed to it. The problem is that it doesn't seem to be the total number of buckets that it should be seeing. All of the cores are showing as being used in the task manager.

Is there some setting somewhere that limits the amount of cores that it can display/use?
read 731 times
9/12/2012 3:16:32 PM (last edit: 9/12/2012 3:16:32 PM)
show user profile  Michael Torus
I believe you can not DR on animations - stills only. Possibly read itin the installation doc.

read 720 times
9/12/2012 10:26:19 PM (last edit: 9/12/2012 10:26:19 PM)
show user profile  donvella
animations are stills... compiled together... so o.O DR should work.

Save yourself some time and do a test, render an image on your local machine - lets say it takes 2min to render. Now render it on the other machine lets say that takes 2min. DR that machine with yours, if your render takes 1min (but only shows 4 of 8 buckets) then can assume its working to full capacity. I could be completely wrong I forget its been awhile since I DRed but It might be showing cores not threads (so you will get 4 buckets for 8 threads).

Also theres a few tips for DR troubleshooting available here if you need, go through this any post back if your still having issues:

read 717 times
9/13/2012 1:01:06 AM (last edit: 9/13/2012 1:01:06 AM)
show user profile  Michael Torus
It's not often I'm right but I'm wrong again Jim!
- "Rendering an animation sequence in distributed rendering mode is not supported. Use distributed rendering only for single frames."

So as long as you're rendering single-frame after single frame it's not a great allocation of your time ( I hope).

BTW - In mentalray you would need each slave to be fully licensed... dumb.

Hoping this helps!
read 700 times
9/13/2012 10:14:07 PM (last edit: 9/13/2012 10:14:07 PM)
show user profile  roseman5285
Thanks for the replies. It seems like its working for rendering out animations (single frames, not a full movie file). All of the machines show that all of the cores are being used, but for some reason vray doesn't want to show all of the buckets. As long as cores are working, I really don't care at this point (but it would just look that much more awesome).

Thanks again!
read 672 times
9/18/2012 10:54:52 PM (last edit: 9/18/2012 10:54:52 PM)
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