Karma Sink
· SideFX Houdini · Karma renderer · #note/sink ·
Environment variables
Disabling devices for more details
| Variable | Effect |
|---|---|
KARMA_XPU_DISABLE_OPTIX_DEVICE = 1 |
Karma XPU will not use any Optix GPU devices |
KARMA_XPU_DISABLE_EMBREE_DEVICE = 1 |
Karma XPU will not use any Embree CPU devices |
KARMA_XPU_DISABLE_DEVICE_n = 1 |
Karma XPU will not use device number n. For example, to disable device 3 in a multi-GPU setup: export KARMA_XPU_DISABLE_DEVICE_3 = 1 |
| HOUDINI_TEXTURE_DISK_CACHE | Set texture caching location. "dir=D:/Temp/houdini_rat" |
| KARMA_XPU_OPTIX_HQ_LINEAR_FILTERING | Default OFF. Force Karma XPU Optix device to do high-quality linear filtering (which will come at a performance cost) |
| KARMA_XPU_OPTIX_FORCE_CONSTANT_FOLDING | Default OFF. This will force XPU to hardcode parameter values directly into shader code. It can improve performance of rendering by ~20%, but will mean shader compilation will be more frequent and take longer. |
| KARMA_XPU_OPTIX_CURVE_OPT_LEVEL | Default Auto (0). Optimization level for Optix curves in KarmaXPU. Higher is faster, but will also consume more memory. Low = 1, Medium = 2, High = 3 |