HtoA 6.2.4.3 is a bug fix release using Arnold 7.2.4.1. This release fixes a critical crash for the GCC 11 version of Houdini 20.0.506 and isn't compatible with the GCC 9 version of Houdini 20.
Note: If you're using the RHEL/CentOS 7 gcc9 version of Houdini, you can use HtoA 6.2.4.2.
HTOA-2421 - Fixed symbol lookup error for the gcc11 build of Houdini 20.0.506
System Requirements
Houdini, Houdini FX, Houdini Indie and Houdini Education
19.0.720
19.5.773
20.0.506
Linux with at least glibc 2.28 and libstdc++ 9.3.1 (gcc 9.3.1) for Houdini 19/19.5. 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. 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 of the Ada, Ampere, Turing, Volta, Pascal, or Maxwell architecture. We recommend using the 525.89 or higher drivers on Linux and 528.49, or higher on Windows. See Arnold GPU for more information.
For GPU rendering, the cache also needs to be re-populated after installing a new Arnold version, updating to a new NVIDIA driver, or changing the hardware configuration of GPUs on the system. More information can be found here.