Inconsistent render on renderfarm

Corona Corona for 3ds Max Issues
1

Hi,

I have some brightness inconsistency from frame to frame on renderfarm.
Not a texture gamma issue.

Comparing frame/node, it appears that intel xeon vs amd threadripper produce different results.

Using max 2019 with Corona 5.

Have to take some time to setup a test scene.

2

Hi,

We are aware that there can be some differences rendering on different CPU architectures. It looks like something similar was reported here: https://forum.corona-renderer.com/ Water flickering with network rendering. #msg155463

It would still be helpful if you could send over a testing scene and some screenshots if you are able to.

Thanks,

Rowan

(Internal ID=323484663)

3

Upload done : 1574766047_Test-CPU-Architecture.zip

Here are 2 screenshots too.
Intel seems to produce more artefacts.

AMD_Ryzen_2950X.jpg
AMD_Ryzen_2950X.jpg2048×1084 271 KB

INTEL_Xeon_E5-2680v3.jpg
INTEL_Xeon_E5-2680v3.jpg2048×1084 282 KB

4

What exactly do you mean by a render farm? Your own local render farm, or an external render farm service?

5

My own

6

Hi,

any news on this ?

7

Hi,

None at the moment. We are still investigating this issue.

We’ll do our best to keep you updated when we have some more information.

Rowan

8

Hi Rowan,

it’s been a while :wink:

Do you have some good news ?

9

Hi,

So the good news is that we now know what is causing the problem.
It is with the dev team and they are looking into a fix for it, but as usual I can’t give you a timescale.

Thanks,

Rowan

10

Ok, thanks!

11

Hi Rowan,

Do you know if this issue will be adressed in v6 ?

12

Hi jop,

I am not sure, I will poke our dev team again and let you know when I have some info.

Cheers,

Rowan

13

Thanks Rowan :wink:

14

Hi,

This is fixed in v6 RC3, please test it out and let me know if there are any issues.

Cheers,

Rowan

15

Great news !
I check asap, thanks !

16

Hi. We’re having the same issue on a job.

We’re using a render manager and it seems like certain systems are rendering differently. Different colouring.

A few systems may have different versions of corona 6 installed as it may have been reinstalled on them for whatever reason

To be safe I better install all systems with the most recent version but is there a way to see which build of corona I’m running?

I can’t seem too see this info anywhere.

Thanks

17

Hi,

It will be best to install the latest version of Corona (v6 HF1) on all systems as this issue was fixed very close the release of v6.

To find the version you can launch 3ds Max → Render Setup (F10) and go to the system tab.

btw, if you continue to have issues with this please start a new thread as it may not be the same problem.

Cheers,

Rowan