CPU with AVX support,

[Susmera]

Please let us know how to make the CPU with AVX support in Proxmox so that we can solve the below error.

WARNING: MongoDB 5.0+ requires a CPU with AVX support, and your current system does not appear to have that!

see https://jira.mongodb.org/browse/SERVER-54407

see also https://www.mongodb.com/community/forums/t/mongodb-5-0-cpu-intel-g4650-compatibility/116610/2

see also https://github.com/docker-library/mongo/issues/485#issuecomment-891991814

 

[LnxBil]

IIRC, the newest KVM and now default CPU type in PVE 8 exposes AVX. You can also just set the CPU type to e.g. Haswell.

Please see:
https://forum.proxmox.com/threads/enable-avx.129019/
https://forum.proxmox.com/threads/feature-suggestion-avx-avx2-cpu-flags.114688/
https://pve.proxmox.com/wiki/Manual:_cpu-models.conf

 

[MinerAle00]

You can use the host CPU in the virtual machine settings, and it should work.

 

[iscrow]

My solution was to define a new CPU model based on x86-64-v2-AES that also exposes AVX

New models can be defined here cluster wide:
/etc/pve/virtual-guest/cpu-models.conf

Add this definition to the /etc/pve/virtual-guest/cpu-models.conf file:

cpu-model: x86-64-v2-AES-AVX
flags +avx;+avx2;+xsave;+aes;+popcnt;+ssse3;+sse4_1;+sse4_2
phys-bits host
hidden 0
hv-vendor-id proxmox
reported-model kvm64

It will then be immediately available in the GUI as a Custom (QEMU) CPU: