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Karma CPU and XPU produce different colors in Houdini 20.5.5 Oct. 27, 2025, 8:06 a.m.

Hello,

I’m encountering a color management issue in Houdini 20.5.550 and newer.
When rendering the same scene with Karma CPU and Karma XPU, the resulting images look noticeably different — the XPU render appears correct, while the CPU render looks color shifted

This behavior did not occur in earlier versions (e.g. Houdini 20.5.278), where both renders matched perfectly.


Additional details:
All textures are .exr files in ACEScg color space
Houdini version: 20.5.550 and above
Color management: OCIO config houdini-config-v2.1.0_aces-v1.3_ocio-v2.3.ocio