Cycles silently fails saving EXR at 3k+ with auto tiling enabled

[redhoot-dev]

Version: Gaffer 1.6.5.0-platform linux ubuntu 6.17.0-8-generic

Description

Cycles fails to save file to disk (but renders to all tiles and samples are complete and reports back finished) when the default settings are used in the CyclesOptions -> "Use auto-tile" is enabled. This only happens when the resolution is around 3k and above. Interactive renders seems to work fine.

It does appear to fully render the image, but "struggles" with saving it to disk.

Disabling "Use Auto-tile" seems to solve the issue.

Happens on both CPU and GPU (optix and cuda) renders.

Steps to reproduce

See attached simple script (rename .txt to .gfr)

autoTileCyclesError.txt

Debug log

No error messages, renders "as complete" and finished.

[johnhaddon]

I think this is likely a duplicate of #5233. We'll need to give it some priority when we come to upgrade Cycles, as I think the auto-tile option has been removed in a more recent version, so the workaround will be trickier.