VCPU how to form?

Question

VMware

Good afternoon guys. Please tell me about the allocation of vCPU to a virtual machine.
There is a host. 2 sockets. 12 cores. A total of 24, including hypertraining 48. And 128 gigabytes of RAM.
Actually created a virtual machine. There is a concept in vSphere 6.0 vCPU and Core per socket.
I have always thought that it is acceptable if I create a virtual machine with 16 cores. Then I should specify in vCPU 16, and in core per socket 8. Since I have two physical sockets. But vSphera can easily allocate 16 vCPUs, and 1 core per socket. That as a result turns out, 16 sockets. And the sphere does not even swear at these actions. So how can we allocate 16 cores correctly? And another question. vNUMA 128 GB. How is it distributed in this case? 64 gigabytes per physical socket? Or 128 by 24 cores? (Which of course is not divisible.)

Answer 1

The sphere does not swear. it doesn't care how many sockets you have. She is primarily interested in the number of physical (cores) and logic (NT) threads (in your case 24 and 48 respectively) BUT! It is quite possible that you will come across some software that does not know how to use many sockets, which may cause problems.