FS#58854 - [blender] CUDA/Render problems

Attached to Project: Community Packages
Opened by Steve (Roken) - Sunday, 03 June 2018, 17:41 GMT
Last edited by Doug Newgard (Scimmia) - Saturday, 09 June 2018, 15:51 GMT
Task Type Bug Report
Category Packages
Status Closed
Assigned To Sven-Hendrik Haase (Svenstaro)
Architecture x86_64
Severity High
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:

Blender from community has been rendering ceiling and floor transparent using principled shader. Cheging the transmission value to 1 may fix it on occasion, but there's no consistency. At a similar time, cuda is throwing errors. eg. CUDA error: Misaligned address in cuCtxSynchronise(), line 1712.

The CUDA error is not consistent.

Downloading from buildbot exhibits none of these problems, and so it's clearly something to do with the way it's being packaged. This started with the last two - three updates.


Additional info:
* package version(s) 7:2.79.b.git2.0385b33f-16
* config and/or log files etc. Nothing to report


Steps to reproduce:

Render a complex scene on GPU. I can't add an attachment, since the scene it's most noticable on is much larger than the 2Mb max.
This task depends upon

Closed by  Doug Newgard (Scimmia)
Saturday, 09 June 2018, 15:51 GMT
Reason for closing:  Fixed
Additional comments about closing:  blender 17:2.79.b.git3.32432d91-1
Comment by Steve (Roken) - Sunday, 03 June 2018, 17:45 GMT
To add - the file most affected is 92Mb. If any maintainer wants me to send it privately, I'm happy to.
Comment by Sven-Hendrik Haase (Svenstaro) - Tuesday, 05 June 2018, 08:43 GMT
There is nothing here that lets me think its a packaging error. We package blender and cuda in a rather vanilla way. Do you have any evidence that this is indeed a packaging problem?
Comment by Steve (Roken) - Tuesday, 05 June 2018, 21:04 GMT
I don;t suspect it's a CUDA issue so much as a Blender issue (and the way that Blender is packaged).

This is borne out by blender from buildbot working fine, whilst the "errors" are with blender from the repository.

As I say, I'm happy to provide the file exhibiting this most, which renders fine with buildbot, but the file is rather large.
Comment by Sven-Hendrik Haase (Svenstaro) - Saturday, 09 June 2018, 12:45 GMT
Please test blender-17:2.79.b.git3.32432d91-1
Comment by Steve (Roken) - Saturday, 09 June 2018, 15:47 GMT
Thank you. Had to wait for the repository to update, but blender-17:2.79.b.git3.32432d91-1 has fixed it.

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