HtoA 6.3.7.1 - Arnold for Houdini
2 April 2025
HtoA 6.3.7.1 is a bugfix release that uses Arnold 7.3.7.1. For the full list of features in HtoA 6.3.7, see the HtoA 6.3.7 release notes.
Installation
Download Arnold for Houdini from your Autodesk Account. See Download Arnold for more information about downloading HtoA from your Autodesk Account.
Follow these installation instructions
Bug Fixes
- ARNOLD-14467 - Random GPU crash during JIT compilation
- ARNOLD-15983 - OpenEXR DWAA float textures read incorrectly
- ARNOLD-15985 - [MaterialX] Parameter with "defaultgeomprop" attribute set overrides connection
- ARNOLD-15986 - [MaterialX] Crash when node with the same name exists inside a nodegraph
- ARNOLD-15993 - Raw drivers receiving incorrect number of samples
- ARNOLD-16041 - [MaterialX] connections to named nodegraph outputs do not work
- ARNOLD-16050 - [MaterialX] ND_mix_surfaceshader renders black when assigned from materialx operator
- ARNOLD-16053 - Triplanar produces artifacts on GPU with some NVIDIA drivers
System Requirements
- Houdini, Houdini FX, Houdini Indie and Houdini Education
- 19.5.805
- 20.0.896
- 20.5.550
- Linux with at least glibc 2.28 and libstdc++ 9.3.1 (gcc 9.3.1) for Houdini 19.5, 20 and 20.5. This is equivalent to RHEL/CentOS 7.
- Linux with at least glibc 2.17 and libstdc++ 11.2.1 (gcc 11.2.1) for Houdini 20/20.5. This is equivalent to Rocky 8.
- macOS 11 or later
- Apple Mac models with M series chips are natively supported by HtoA
- x86-64 CPUs need to support the SSE4.1 instruction set. Apple Mac models with M series chip are supported natively mode.
- GPU rendering works on Windows and Linux only and requires an NVIDIA GPU with the Maxwell architecture or later.
- On Linux, we recommend 560.35.03 or higher drivers.
- On Windows, we recommend 560.76 or higher drivers.
- Optix™ denoiser requires an NVidia GPU with CUDA™ Compute Capability 5.0 and above.
- Intel OIDN GPU support is limited to:
- MacOS
- Apple native CPUs (M1 and newer)
- Windows
- Intel Xe dedicated and integrated GPUs
- NVIDIA GPUs using Turing or newer architectures
- AMD GPUs with RDNA2 (Navi 21 only) and RDNA3 (Navi 3x) architectures
- MacOS