John Mather

Do you mean the DGX Spark (Linux) or the RTX Spark (Windows)?

Houdini 22 shipped with a Linux Arm build that runs natively on the DGX Spark. You can find it on the download page as a Technical Preview. There is no native build of Houdini for the RTX Spark at the moment, but it should run in emulation.

chongsong
Can Karma XPU call the GPU for rendering on it, and what advantages are there for memory allocation under a unified architecture?

Yes, Karma XPU is fully supported, however be aware that it currently has no knowledge about unified memory architectures. Because of this, the data in RAM will still be "uploaded" to "VRAM", potentially reducing the amount of available memory. This is something we plan to address however.

New in 21.0.834/22.0.438

• Added support for COPs networks.
  
• Added support for Principled shaders.