Glad you found a workable solution. No idea why it works.
EDIT: update to the below. Looks like you can trick Houdini to have all the features of the Nvidia driver, full quality OpenGL, but with the stability of the AMD driver. You have to RMB on the dock icon, set the ‘Desktop on Display 2’ which is the AMD screen, then when you launch Houdini on the Nvidia monitor it does not crash. So perhaps if we had an env variable like ‘set OpenGL vendor’ then we could force Houdini to be stable on all OsX GL systems…
EDIT: OLD-> Looks like it enforces all the same disabled AMD features i.e. no anti-aliasing, dithered transparency etc on the Nvidia card. Glad for the stability but not so pretty…
Is opencl acceleration still out of question on Mac OSX platform ?
OsX/OpenCL GPU is working since H14. Unfortunately OpenCL CPU is still out on OsX.