HTOA-2731 - Arnold Render Settings now puts RGBA at the top of the list of ordered render vars, so it is the default viewport AOV
HTOA-2734 - Added more error logging to "driver_houdini" if it fails to communicate with mplay, as part of an ongoing effort to improve the debugging experience when the render view is silently failing
ARNOLD-14289 - Crash when interactively removing operator nodes
ARNOLD-15406 - [GPU] Uninitialized memory causing random crashes
ARNOLD-15437 - open_pbr_surface was not supported in arnold MaterialX implementation
ARNOLD-15445 - [GPU] Crash with multiple GPUs
ARNOLD-15465 - Setting IOR to high values in OpenPBR causes NaNs
usd#2090 - Fixed crashes when registering the TfNotice callback multiple times
System Requirements
Houdini, Houdini FX, Houdini Indie and Houdini Education
19.5.805
20.0.751
20.5.332
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 10.13 or later, macOS 11 or later for Houdini 19.5
Apple Mac models with M series chips:
Natively supported by Arnold for Houdini 19.5
Supported under Rosetta 2 mode for older versions of Houdini
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.