[lsda]

Hi, we are rendering large size images and run into a bit depth problem: 8 bit works, 16b bit does NOT:

settings:
- MXS file is around 1 GB
- Resolution is 55280 x 2011 Pixel
- ZBuffer and Object ID enabled

If we render with render channel @ 16bit, ObjectID @ 16bit, ZBuffer @ 32bit Maxwell is doing voxelization but crashes before rendering.
If we render with render channel @ 8bit , ObjectID @ 8bit, ZBuffer @ 32bit, Maxwell is rendering and shuts down while writing the image files (MXI file is written and can be opened, but attempts to write 16 bit image output also crashes)
With everything on 8 bit Maxwell works without any problems.
We would like to use 16 and 32 bit for postprocessing.
The RAM amount does not seem to be the problem, the task manager never reaches our hardware limits: on one machine (PC) 10 of 12 GB RAM is used, on another (Mac, Bootcamp, Win7) 10 of 16 GB.

With reduced resolution of 34187x1243px Maxwell works fine (we found a magic limit of 42,5 Giga-Pixel).
We actually do offset renderings so the overall image resolution is three times as large in length (nine times in area).

Any ideas?

[brodie_geers]

So you're running it as a network render? Have you tried running it on one machine alone as a test? maybe it's network issue?

Just so I can be the first to ask Why is the image so large?

-Brodie

[lsda]

Unfortunately it is not a network render job.
Renderings are done on one single machine, we just tested it with two different tasks to exclude hardware failure.
The image is so large because it will be printed in large size (sort of panorama).

[Mihai]

What format are you saving to? Can you try .exr?