Comment 16 for bug 1621067

Alexey,

>> I don't have any other valuable propositions for nova, but IMO described issue is certainly a bug (though I am not sure about its importance). I am not 100% sure about nova, but it is certainly in the product and it is not configuration issue we can fix using Fuel. So your word is needed here.

I gave you my take on this: operators can choose any cpu model they want in nova config (or enable features pass-through) after deployment, when they tested this configuration with the cloud images, that are going to be used in this cloud. For now we could probably live with a "safe" default.

I'm all for investigating this further, because, as we see, other cloud images with newer kernels or just applications that use AVX2 work properly, so it's only Ubuntu kernel which is affected. We could ask MOS Linux or Alexey Sheplyakov to continue the investigation and try to understand what is the root cause of the failure.