KtoA 4.3.7.2 - Arnold for Katana

2 April 2025

KtoA 4.3.7.2 uses Arnold 7.3.7.1 and is a bug-fix release.

Installation

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

Windows 10 or later, with the Visual Studio 2019 redistributable.
Linux with at least glibc 2.17 and libstdc++ 4.8.5 (gcc 4.8.5). This is equivalent to RHEL 7. For Katana 7.0 and newer, an equivalent of RHEL 8 or newer is required.
x86-64 CPUs need to support the SSE4.1 instruction set.
GPU rendering and Optix denoising work on Windows and Linux only, and require 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.
Katana Katana 6.0v1 or newer, Katana 6.5v1 or newer, Katana 7.0v1 or newer, Katana 7.5v1 or newer, or Katana 8.0v1 or newer.
Intel OIDN GPU support is limited to:
- 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