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Summary

Title:	Fur on Farm Breaking
Category:	Crash/Critical
Status:	Fixed
Posted By:	Danny ( Danny Young )
Date Created:	12 April 2022

Problem

Description:	Hey hey, This is hard to pinpoint as I've tried a lot of variations and sometimes it works OK but not always... but basically I have two spheres in a scene, one driven by an alembic cache, the other with a few simple keyframes. I have hair on both. They render fine on my workstation but if I send to the farm, the hair is clearly not the same. I've got all the Remember options checked. Is this result familiar to anyone? Maybe you have a clue where to investigate further. I'm using Maya 2019. Ornatrix v3.3.6.20241 Vray v4.30.02
Steps to Reproduce:	Create a sphere Add default hair Add simple animation Send to render farm
	Attached Files: normal.PNG (628061 bytes), notNormal.PNG (325852 bytes),

12 April 2022 #31190
IvanKolev	Can you test with another renderer? If the scene is simple as it seems, you may zip and post it here. Ivan Kolev (Software Developer, EPHERE Inc.) E-mail: ivan.kolev at ephere dot com Discord: ikolev
12 April 2022 #31192
Danny	Working on getting a different renderer set up to test. I'll see if I can get the files to post here.
19 April 2022 #31229
Danny	I was finally able to test with the latest version of both Vray and Redshift and I can confirm the issue is identical in both.
19 April 2022 #31230
Danny	There is also an email from me out to the ephere@gmail.com address with a scene file to look at. Let me know if you're able to find it.
19 April 2022 #31231
IvanKolev	Yes, we got the sample scene, we still cannot get our V-Ray setup with licenses and all to work. And I had problems switching to Arnold, but I'll keep trying. In general, we find problems with renderers easiest to investigate with Arnold, as the translator is under our control (unlike V-Ray and Redshift), and it doesn't need a license. Ivan Kolev (Software Developer, EPHERE Inc.) E-mail: ivan.kolev at ephere dot com Discord: ikolev
19 April 2022 #31232
Danny	Understood. Unfortunately the way things are set up here I don't have quick access to Arnold to test on the farm. We definitely need Vray/Redshift to work for production but I understand if Arnold helps you troubleshoot. If you're able to just replace the shaders and lights, nothing else important in the scene should be render-specific. Or just make a new furball with Arnold and a light and see if it renders over your network. I'd be curious to know if you get a different result from me.
19 April 2022 #31233
Danny	If it helps, Redshift will let you render everything in free mode so you don't have to deal with licenses. There would just be a watermark.
28 April 2022 #31264
Danny	It's been a wild ride but we figured out the issue on our end and I'm posting it here for future reference: The problem was that Deadline compiles the job for render on the farm by copying the original scene file and prepping a few things before sending it to render, but sometimes a machine that had an older version of Ornatrix installed would be used to set this up. The original scene file would be duplicated and saved using this incompatibility, which would break the hair distribution in the Maya file before it even made it to render. Personally I'm not sure if this is something that Deadline always does or if it's just the way we have things set up in house, (I try not to get involved) but either way, something to consider for the next troubleshooter.