OSX accepts only a specific number of cores

[Koston411]

I successfully installed OSX (BigSur and Monterey) on Proxmox v7.1-10.
I have an intel 11700K (16 cores).

I initially ran the VM with 16 cores allocated but after some time (15-30 minutes), the Mac OSX VMs freeze. I read that it's better to allocate a couple cores (2-4) for the host machine.
So, I tried with less cores assigned to the OSX VMs, I can start the VMs configured with 4 cores and 8 cores without any issue (no more freeze).

Though, I'd like to maximize the CPU power available for the OSX VMs and would like to be able to allocate 12-14 cores to OSX. Unfortunately, the VM is stuck at the Apple logo. Any idea how to solve this?

Note: I can run an Ubuntu VM and Windows VM with 12 and 14 cores with no problem.

 

[ulises]

In some Proxmox forum I have read that macOS configuration only accepts 4 cores and 8 cores in each cpu slot. So to use 16 threads of my processor (Intel i9 10900K), I have to configure 2 sockets and 8 cores. I did so and my vm works perfect.
if you setup the VM with 1 Slot and 16 Cores, macOS will Run but Processor's id will marked as Unkown.