batch render - distributed render - render region mismatch

[ignuf]

Hi,
ok, i have a hardware setup as follows :-

pc win 7 (main machine) and a macbook pro (acting as vray slave) - maya 2012 - V-Ray: V-Ray for Maya version 2.40.02 from May 14 2014, 15:55:48
[2014/Jul/16|14:07:47] V-Ray: V-Ray core version is 2.00.02

I'm working on an under water scene, which renders just fine when rendering a single frame in VFB, but when I set of a batch render using a .bat file i get these discrepancies between the render regions , please see images ,
on the batch render the first few frame that are output seem ok but then after that the discrepancies start to appear.

the caustics are false , i'm using a spotlight with an image sequence applied, the image sequence is only 16 frames and repeated throughout the animation. (seamlessly tiled image sequence)

any help would be appreciated

regards
ignuf

[ignuf]

so at the momnent, to render out the scene sequence, i have to disable distributed rendering

[ivaylo.ivanov]

So, this happens only with DR + region + image sequence?

[ignuf]

hi Ivaylo,

actually its only when I do a DR and image sequence, if I render a single image in the VFB using DR there's no problems .



regards
Guy

[ignuf]

ok, just to see if this fixes anything , I've upgraded from Vray 2 to Vray 3 beta to see if I get the same issues... have to wait until tomorrow tho as I need to upgrade the license , thanks for replying so quickly
regards
Guy

[Svetlozar Draganov]

Let us know if the same issue persists in version 3.x

[ignuf]

Hi,

sorry its been a small while since getting back to this , I didn't manage to test to see if Vray 3.0 had the same issues when rendering this scene . I have another scene now again an underwater scene , and its seems to be having the same issue...

I have a directional light with an image sequence piped in (false water caustics ) along with an environmental fog to create the basic underwater atmosphere, if render the scene through the VFB all seems to be as expected, but if do a batch render the false caustics don't match up in each frame , so its something to do with the way the image sequence is loaded / shared between the two computers , any help is appreciated

I have a Boxx 8400se (win 7 , dual quad core xeon 3.2 Ghz processor, quadro 4000 graphics card , 16GB RAM ) as the main computer connected to a macbook pro (yosemite, intel i7 2.4Ghz, AMD Radeon HD 6770M 1024 MB, 16GB RAM)

[tashko.zashev]

Hi,

It would be very helpful if you can send us the scene file for investigation.
You can post it here or send to our support mail (support at chaosgroup.com)

[ignuf]

Hi tashko,

ok , here's a reduced version of the file.

thanks and regards
ignuf

[tashko.zashev]

Hi tashko,

ok , here's a reduced version of the file.

thanks and regards
ignuf

Thank you.
I managed to reproduce the issue with V-Ray 2.4 build.

Edit: It seems to work fine in V-Ray 3, I will check if we can move the fix to the 2.x builds.

[ignuf]

that great , thanks Tashko !!

[ignuf]

still amazed how fast you guys can come back with solutions !! does anyone actually sleep at Chaos ?

[tashko.zashev]

still amazed how fast you guys can come back with solutions !! does anyone actually sleep at Chaos ?

Hehe, good question