bepeg4d wrote:No sorry, the beta testing group is a closed group, and has been chosen by Apple several months ago.
Better to install also Catalina, Big Sur beta is not ready for production.

ciao Beppe

Thank you for your reply. I will stay patient until I know more.

Hi,
my suggestion is to perform a Clean install of Catalina on an external hdd/ssd, Big Sur beta does not have the proper Apple Metal driver for running OctaneX.
My iMac has four os in it, High Sierra, Catalina, Big Sur and Win 10 ;)
ciao Beppe

Grazie Beppe.

Is it possible to join the beta for ...

I know this is probably a "you shouldn't have upgraded to the Big Sur public beta" issue, but I did upgrade and now the Metal preview doesn't work.

I'm getting this error:

Compute error 2097152:113:
compute device 0: Linking 6d197dfc90d19e72 shader failed
device 0: failed to initialize render ...